diff --git a/include/battle_util.h b/include/battle_util.h
index d01ca3411d..15b238b17d 100644
--- a/include/battle_util.h
+++ b/include/battle_util.h
@@ -48,7 +48,6 @@ struct TypePower
 extern const struct TypePower gNaturalGiftTable[];
 
 void HandleAction_ThrowBall(void);
-bool32 IsAffectedByFollowMe(u32 battlerAtk, u32 defSide);
 bool32 IsAffectedByFollowMe(u32 battlerAtk, u32 defSide, u32 move);
 void HandleAction_UseMove(void);
 void HandleAction_Switch(void);