diff --git a/keyboards/aeboards/ext65/rev2/rev2.c b/keyboards/aeboards/ext65/rev2/rev2.c
index 35e88a8b19..5d7658101e 100644
--- a/keyboards/aeboards/ext65/rev2/rev2.c
+++ b/keyboards/aeboards/ext65/rev2/rev2.c
@@ -1,5 +1,8 @@
 #include "rev2.h"
 
+// Tested and verified working on ext65rev2
+void matrix_io_delay(void) { __asm__ volatile("nop\nnop\nnop\n"); }
+
 #ifdef OLED_DRIVER_ENABLE
 void board_init(void) {
   SYSCFG->CFGR1 |= SYSCFG_CFGR1_I2C1_DMA_RMP;
diff --git a/keyboards/xelus/trinityxttkl/trinityxttkl.c b/keyboards/xelus/trinityxttkl/trinityxttkl.c
index fbf38010a2..c548a10cf0 100644
--- a/keyboards/xelus/trinityxttkl/trinityxttkl.c
+++ b/keyboards/xelus/trinityxttkl/trinityxttkl.c
@@ -1 +1,4 @@
 #include "trinityxttkl.h"
+
+// Tested and verified working on Trinity XT TKL
+void matrix_io_delay(void) { __asm__ volatile("nop\nnop\nnop\n"); }