diff --git a/src/battle_main.c b/src/battle_main.c
index 5841f8f615..b75c44b777 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -1964,7 +1964,6 @@ u8 CreateNPCTrainerPartyFromTrainer(struct Pokemon *party, const struct Trainer
     u8 fixedIV;
     s32 i, j;
     u8 monsCount;
-    s32 ball = -1;
     if (battleTypeFlags & BATTLE_TYPE_TRAINER && !(battleTypeFlags & (BATTLE_TYPE_FRONTIER
                                                                         | BATTLE_TYPE_EREADER_TRAINER
                                                                         | BATTLE_TYPE_TRAINER_HILL)))
@@ -1986,6 +1985,7 @@ u8 CreateNPCTrainerPartyFromTrainer(struct Pokemon *party, const struct Trainer
 
         for (i = 0; i < monsCount; i++)
         {
+            s32 ball = -1;
             u32 personalityHash = GeneratePartyHash(trainer, i);
             if (trainer->doubleBattle == TRUE)
                 personalityValue = 0x80;