diff --git a/keyboards/atreus/keymaps/default/keymap.c b/keyboards/atreus/keymaps/default/keymap.c
index b6ac626dc9..70d3c9fb1e 100644
--- a/keyboards/atreus/keymaps/default/keymap.c
+++ b/keyboards/atreus/keymaps/default/keymap.c
@@ -5,6 +5,8 @@
 #define LA_SYM MO(SYM)
 #define LA_NAV MO(NAV)
 
+#define MUTE LGUI(KC_C)
+
 enum layers {
     DEF,
     SYM,
@@ -37,7 +39,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
 
     [NAV] = LAYOUT(
-        KC_TAB, XXXXXXX,XXXXXXX,XXXXXXX,XXXXXXX,                RESET,  KC_CAPS,XXXXXXX,XXXXXXX,XXXXXXX,
+        KC_TAB, XXXXXXX,XXXXXXX,XXXXXXX,MUTE,                   RESET,  KC_CAPS,XXXXXXX,XXXXXXX,XXXXXXX,
         OS_SHFT,OS_ALT, OS_CTRL,OS_CMD, XXXXXXX,                KC_LEFT,KC_DOWN,KC_UP,  KC_RGHT,KC_BSPC,
         XXXXXXX,XXXXXXX,OS_RALT,XXXXXXX,KC_PSCR,XXXXXXX,XXXXXXX,XXXXXXX,KC_PGDN,KC_PGUP,XXXXXXX,KC_ENT,
         XXXXXXX,XXXXXXX,XXXXXXX,_______,_______,XXXXXXX,XXXXXXX,_______,_______,XXXXXXX,XXXXXXX,XXXXXXX