diff --git a/src/apprentice.c b/src/apprentice.c
index 439bcc6569..ad7568a76f 100644
--- a/src/apprentice.c
+++ b/src/apprentice.c
@@ -338,7 +338,7 @@ static u16 GetRandomAlternateMove(u8 monId)
     const struct LevelUpMove *learnset;
     bool32 needTMs = FALSE;
     u16 moveId = MOVE_NONE;
-    bool8 shouldUseMove;
+    bool32 shouldUseMove;
     u8 level;
 
     id = APPRENTICE_SPECIES_ID(monId);