diff --git a/tmk_core/common/action_macro.c b/tmk_core/common/action_macro.c
index 34e22e57..b2891bf4 100644
--- a/tmk_core/common/action_macro.c
+++ b/tmk_core/common/action_macro.c
@@ -34,7 +34,7 @@ void action_macro_play(const macro_t *macro_p)
     macro_t macro = END;
     uint8_t interval = 0;
 
-    uint8_t mod_storage;
+    uint8_t mod_storage = 0;
 
     if (!macro_p) return;
     while (true) {