diff --git a/src/field_player_avatar.c b/src/field_player_avatar.c
index 88385896c7..6ad92c2fb2 100644
--- a/src/field_player_avatar.c
+++ b/src/field_player_avatar.c
@@ -101,9 +101,9 @@ static void sub_808C280(struct ObjectEvent *);
 
 static void StartStrengthAnim(u8, u8);
 static void Task_PushBoulder(u8 taskId);
-static u8 PushBoulder_Start(struct Task *task, struct ObjectEvent *playerObject, struct ObjectEvent *strengthObject);
-static u8 PushBoulder_Move(struct Task *task, struct ObjectEvent *playerObject, struct ObjectEvent *strengthObject);
-static u8 PushBoulder_End(struct Task *task, struct ObjectEvent *playerObject, struct ObjectEvent *strengthObject);
+static bool8 PushBoulder_Start(struct Task *task, struct ObjectEvent *playerObject, struct ObjectEvent *strengthObject);
+static bool8 PushBoulder_Move(struct Task *task, struct ObjectEvent *playerObject, struct ObjectEvent *strengthObject);
+static bool8 PushBoulder_End(struct Task *task, struct ObjectEvent *playerObject, struct ObjectEvent *strengthObject);
 
 static void DoPlayerMatJump(void);
 static void DoPlayerAvatarSecretBaseMatJump(u8 taskId);