diff --git a/keyboards/abacus/config.h b/keyboards/abacus/config.h
index 7fa9898539..bc4120544f 100644
--- a/keyboards/abacus/config.h
+++ b/keyboards/abacus/config.h
@@ -105,10 +105,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/ai03/orbit_x/config.h b/keyboards/ai03/orbit_x/config.h
index fb2ebe44f6..c21e3e8f65 100644
--- a/keyboards/ai03/orbit_x/config.h
+++ b/keyboards/ai03/orbit_x/config.h
@@ -165,10 +165,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 /* Bootmagic Lite key configuration */
 // #define BOOTMAGIC_LITE_ROW 0
diff --git a/keyboards/allison/config.h b/keyboards/allison/config.h
index 8a310d0a20..e2e032442d 100644
--- a/keyboards/allison/config.h
+++ b/keyboards/allison/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/allison_numpad/config.h b/keyboards/allison_numpad/config.h
index c8b8189071..0e04a8722a 100644
--- a/keyboards/allison_numpad/config.h
+++ b/keyboards/allison_numpad/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/bat43/config.h b/keyboards/bat43/config.h
index 57d65233c7..eb1c1a05cf 100644
--- a/keyboards/bat43/config.h
+++ b/keyboards/bat43/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/ckeys/washington/config.h b/keyboards/ckeys/washington/config.h
index 419e35e3be..9a9b69d323 100644
--- a/keyboards/ckeys/washington/config.h
+++ b/keyboards/ckeys/washington/config.h
@@ -193,10 +193,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/cospad/config.h b/keyboards/cospad/config.h
index cfc2d59f60..42db8e25b7 100644
--- a/keyboards/cospad/config.h
+++ b/keyboards/cospad/config.h
@@ -193,10 +193,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/crkbd/config.h b/keyboards/crkbd/config.h
index 4357a218d4..fb1cdf3962 100644
--- a/keyboards/crkbd/config.h
+++ b/keyboards/crkbd/config.h
@@ -24,11 +24,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define USE_I2C
 #define USE_SERIAL
 
-#ifdef USE_Link_Time_Optimization
-  // LTO has issues with macros (action_get_macro) and "functions" (fn_actions),
-  //  so just disable them
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-
-  #define DISABLE_LEADER
-#endif // USE_Link_Time_Optimization
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/daisy/config.h b/keyboards/daisy/config.h
index 4ee4d242fc..ea03d116bd 100644
--- a/keyboards/daisy/config.h
+++ b/keyboards/daisy/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/dztech/dz60rgb/v1/config.h b/keyboards/dztech/dz60rgb/v1/config.h
index d6f4624259..fb4e622458 100644
--- a/keyboards/dztech/dz60rgb/v1/config.h
+++ b/keyboards/dztech/dz60rgb/v1/config.h
@@ -33,10 +33,8 @@
 #define DEBOUNCE 3
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
diff --git a/keyboards/dztech/dz60rgb/v2/config.h b/keyboards/dztech/dz60rgb/v2/config.h
index b344e34b37..6c5484fc8a 100644
--- a/keyboards/dztech/dz60rgb/v2/config.h
+++ b/keyboards/dztech/dz60rgb/v2/config.h
@@ -33,10 +33,8 @@
 #define DEBOUNCE 3
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
diff --git a/keyboards/dztech/dz60rgb_ansi/v1/config.h b/keyboards/dztech/dz60rgb_ansi/v1/config.h
index fb76ee7df9..f34226efc6 100644
--- a/keyboards/dztech/dz60rgb_ansi/v1/config.h
+++ b/keyboards/dztech/dz60rgb_ansi/v1/config.h
@@ -33,10 +33,8 @@
 #define DEBOUNCE 3
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
diff --git a/keyboards/dztech/dz60rgb_ansi/v2/config.h b/keyboards/dztech/dz60rgb_ansi/v2/config.h
index 3bd287b5f2..b9710805a6 100644
--- a/keyboards/dztech/dz60rgb_ansi/v2/config.h
+++ b/keyboards/dztech/dz60rgb_ansi/v2/config.h
@@ -33,10 +33,8 @@
 #define DEBOUNCE 3
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
diff --git a/keyboards/dztech/dz60rgb_wkl/v1/config.h b/keyboards/dztech/dz60rgb_wkl/v1/config.h
index b5d267640b..49ce112360 100644
--- a/keyboards/dztech/dz60rgb_wkl/v1/config.h
+++ b/keyboards/dztech/dz60rgb_wkl/v1/config.h
@@ -33,10 +33,8 @@
 #define DEBOUNCE 3
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
diff --git a/keyboards/dztech/dz60rgb_wkl/v2/config.h b/keyboards/dztech/dz60rgb_wkl/v2/config.h
index 4ae9b93951..e46495d73b 100644
--- a/keyboards/dztech/dz60rgb_wkl/v2/config.h
+++ b/keyboards/dztech/dz60rgb_wkl/v2/config.h
@@ -33,10 +33,8 @@
 #define DEBOUNCE 3
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
diff --git a/keyboards/dztech/dz65rgb/v1/config.h b/keyboards/dztech/dz65rgb/v1/config.h
index bf700a2384..9cd7d293ce 100644
--- a/keyboards/dztech/dz65rgb/v1/config.h
+++ b/keyboards/dztech/dz65rgb/v1/config.h
@@ -29,10 +29,8 @@
 #define DIODE_DIRECTION COL2ROW
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_MATRIX_LED_PROCESS_LIMIT 4
diff --git a/keyboards/dztech/dz65rgb/v2/config.h b/keyboards/dztech/dz65rgb/v2/config.h
index 6a55f87667..83cf0110ab 100644
--- a/keyboards/dztech/dz65rgb/v2/config.h
+++ b/keyboards/dztech/dz65rgb/v2/config.h
@@ -29,10 +29,8 @@
 #define DIODE_DIRECTION COL2ROW
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #ifdef RGB_MATRIX_ENABLE
 #    define RGB_MATRIX_LED_PROCESS_LIMIT 4
diff --git a/keyboards/ergodox_ez/keymaps/danielo515/config.h b/keyboards/ergodox_ez/keymaps/danielo515/config.h
index 8982e76536..ff201caa90 100644
--- a/keyboards/ergodox_ez/keymaps/danielo515/config.h
+++ b/keyboards/ergodox_ez/keymaps/danielo515/config.h
@@ -25,9 +25,7 @@
 #    define NO_PRINT
 #endif
 
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 #undef RGBLIGHT_ANIMATIONS
diff --git a/keyboards/exclusive/e7v1se/config.h b/keyboards/exclusive/e7v1se/config.h
index f11a700920..8784828ed8 100644
--- a/keyboards/exclusive/e7v1se/config.h
+++ b/keyboards/exclusive/e7v1se/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/handwired/fc200rt_qmk/config.h b/keyboards/handwired/fc200rt_qmk/config.h
index fa070494a9..12c40360b1 100644
--- a/keyboards/handwired/fc200rt_qmk/config.h
+++ b/keyboards/handwired/fc200rt_qmk/config.h
@@ -31,7 +31,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 8
 #define MATRIX_COLS 16
 
-
 #define MATRIX_ROW_PINS { B0, B1, B2, B3, E6, B7, D0, D1 }
 #define MATRIX_COL_PINS { D2, D3, C6, C7, D5, D4, D6, D7, B4, B5, B6, F7, F6, F5, F4, F1 }
 #define UNUSED_PINS
@@ -39,7 +38,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION ROW2COL
 
-
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 5
 
@@ -130,7 +128,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define MAGIC_KEY_NKRO           N
 //#define MAGIC_KEY_SLEEP_LED      Z
 
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+/* disable these deprecated features by default */
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/handwired/floorboard/config.h b/keyboards/handwired/floorboard/config.h
index 6f2e9d0c0b..bf8646f39a 100644
--- a/keyboards/handwired/floorboard/config.h
+++ b/keyboards/handwired/floorboard/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/handwired/jtallbean/split_65/config.h b/keyboards/handwired/jtallbean/split_65/config.h
index a2c8d22bf7..5c7a9d54ba 100644
--- a/keyboards/handwired/jtallbean/split_65/config.h
+++ b/keyboards/handwired/jtallbean/split_65/config.h
@@ -195,10 +195,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/handwired/sick68/config.h b/keyboards/handwired/sick68/config.h
index 3d7d413fa1..9f050c361e 100644
--- a/keyboards/handwired/sick68/config.h
+++ b/keyboards/handwired/sick68/config.h
@@ -194,10 +194,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/handwired/videowriter/config.h b/keyboards/handwired/videowriter/config.h
index d392564eb9..bcf059b62b 100644
--- a/keyboards/handwired/videowriter/config.h
+++ b/keyboards/handwired/videowriter/config.h
@@ -130,10 +130,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 /* Bootmagic Lite key configuration */
 // #define BOOTMAGIC_LITE_ROW 0
diff --git a/keyboards/hineybush/physix/config.h b/keyboards/hineybush/physix/config.h
index cc6e185321..ccdb18fd21 100644
--- a/keyboards/hineybush/physix/config.h
+++ b/keyboards/hineybush/physix/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/j80/config.h b/keyboards/j80/config.h
index a4a10bff42..c4276431cf 100644
--- a/keyboards/j80/config.h
+++ b/keyboards/j80/config.h
@@ -39,10 +39,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define BACKLIGHT_PIN D4
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 /* key combination for magic key command */
 /* defined by default; to change, uncomment and set to the combination you want */
diff --git a/keyboards/jae/j01/config.h b/keyboards/jae/j01/config.h
index 8faa651aa7..9c05a98766 100644
--- a/keyboards/jae/j01/config.h
+++ b/keyboards/jae/j01/config.h
@@ -165,10 +165,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/just60/config.h b/keyboards/just60/config.h
index ef0af7c610..66e5bf7b67 100644
--- a/keyboards/just60/config.h
+++ b/keyboards/just60/config.h
@@ -48,7 +48,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_RESYNC_ENABLE
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/keebio/choconum/config.h b/keyboards/keebio/choconum/config.h
index 9eee4eca9b..d3a0da168b 100644
--- a/keyboards/keebio/choconum/config.h
+++ b/keyboards/keebio/choconum/config.h
@@ -147,10 +147,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/keebwerk/nano_slider/config.h b/keyboards/keebwerk/nano_slider/config.h
index ba079c5310..3ed356b8a9 100644
--- a/keyboards/keebwerk/nano_slider/config.h
+++ b/keyboards/keebwerk/nano_slider/config.h
@@ -161,10 +161,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/lattice60/config.h b/keyboards/lattice60/config.h
index e864eeebb3..649219538d 100644
--- a/keyboards/lattice60/config.h
+++ b/keyboards/lattice60/config.h
@@ -99,7 +99,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/lfkeyboards/lfk78/config.h b/keyboards/lfkeyboards/lfk78/config.h
index 3478c9629f..b96aca07c9 100644
--- a/keyboards/lfkeyboards/lfk78/config.h
+++ b/keyboards/lfkeyboards/lfk78/config.h
@@ -158,10 +158,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/lfkeyboards/lfkpad/config.h b/keyboards/lfkeyboards/lfkpad/config.h
index fb48297e5c..b05ee0f0ca 100644
--- a/keyboards/lfkeyboards/lfkpad/config.h
+++ b/keyboards/lfkeyboards/lfkpad/config.h
@@ -175,10 +175,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/mc_76k/config.h b/keyboards/mc_76k/config.h
index cccd6a8e93..cd14081f4d 100644
--- a/keyboards/mc_76k/config.h
+++ b/keyboards/mc_76k/config.h
@@ -98,7 +98,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/miller/gm862/config.h b/keyboards/miller/gm862/config.h
index fb44ed6c86..1a8eb265d9 100644
--- a/keyboards/miller/gm862/config.h
+++ b/keyboards/miller/gm862/config.h
@@ -28,11 +28,11 @@
 #define UNUSED_PINS
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION COL2ROW
+
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 3
 #ifdef RGB_MATRIX_ENABLE
diff --git a/keyboards/mountainblocks/mb17/config.h b/keyboards/mountainblocks/mb17/config.h
index 7db47ff940..f469c9bd46 100644
--- a/keyboards/mountainblocks/mb17/config.h
+++ b/keyboards/mountainblocks/mb17/config.h
@@ -147,12 +147,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
-
-
-
-
-
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/oddball/config.h b/keyboards/oddball/config.h
index b3679bea4c..99d9f75d5f 100644
--- a/keyboards/oddball/config.h
+++ b/keyboards/oddball/config.h
@@ -195,10 +195,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/silverbullet44/config.h b/keyboards/silverbullet44/config.h
index 6872f5fb44..a7402a001b 100644
--- a/keyboards/silverbullet44/config.h
+++ b/keyboards/silverbullet44/config.h
@@ -233,10 +233,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_LAYER
 //#define NO_ACTION_TAPPING
 //#define NO_ACTION_ONESHOT
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-#    define NO_ACTION_MACRO
-#    define NO_ACTION_FUNCTION
-#endif
+
+/* disable these deprecated features by default */
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 /*
  * MIDI options
diff --git a/keyboards/switchplate/southpaw_fullsize/config.h b/keyboards/switchplate/southpaw_fullsize/config.h
index adbb4f8db4..2d4fb9a971 100644
--- a/keyboards/switchplate/southpaw_fullsize/config.h
+++ b/keyboards/switchplate/southpaw_fullsize/config.h
@@ -133,10 +133,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 /* Bootmagic Lite key configuration */
 // #define BOOTMAGIC_LITE_ROW 0
diff --git a/keyboards/treadstone48/rev1/config.h b/keyboards/treadstone48/rev1/config.h
index 56ffbaef01..3ea285836c 100644
--- a/keyboards/treadstone48/rev1/config.h
+++ b/keyboards/treadstone48/rev1/config.h
@@ -198,10 +198,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/wallaby/config.h b/keyboards/wallaby/config.h
index 0f142f18f2..11fa674a83 100644
--- a/keyboards/wallaby/config.h
+++ b/keyboards/wallaby/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/ymdk/ymd09/config.h b/keyboards/ymdk/ymd09/config.h
index b7e5539df2..372046b8bc 100644
--- a/keyboards/ymdk/ymd09/config.h
+++ b/keyboards/ymdk/ymd09/config.h
@@ -60,7 +60,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_RESYNC_ENABLE
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/yosino58/config.h b/keyboards/yosino58/config.h
index 4357a218d4..fb1cdf3962 100644
--- a/keyboards/yosino58/config.h
+++ b/keyboards/yosino58/config.h
@@ -24,11 +24,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define USE_I2C
 #define USE_SERIAL
 
-#ifdef USE_Link_Time_Optimization
-  // LTO has issues with macros (action_get_macro) and "functions" (fn_actions),
-  //  so just disable them
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-
-  #define DISABLE_LEADER
-#endif // USE_Link_Time_Optimization
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/yurei/config.h b/keyboards/yurei/config.h
index da37d3ce88..24d6229bdd 100644
--- a/keyboards/yurei/config.h
+++ b/keyboards/yurei/config.h
@@ -192,10 +192,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 
 /* disable these deprecated features by default */
-#ifndef LINK_TIME_OPTIMIZATION_ENABLE
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
 /*
  * MIDI options
  */
diff --git a/keyboards/zinc/config.h b/keyboards/zinc/config.h
index 9c60d631bc..712db0ac6d 100644
--- a/keyboards/zinc/config.h
+++ b/keyboards/zinc/config.h
@@ -40,11 +40,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //     ./tmk_core
 //     ......
 
-#ifdef USE_Link_Time_Optimization
-  // LTO has issues with macros (action_get_macro) and "functions" (fn_actions),
-  //  so just disable them
-  #define NO_ACTION_MACRO
-  #define NO_ACTION_FUNCTION
-#endif // USE_Link_Time_Optimization
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
 
 //#endif /* CONFIG_H */