diff --git a/src/battle_setup.c b/src/battle_setup.c
index 01e95d45a1..6a6f529ea6 100644
--- a/src/battle_setup.c
+++ b/src/battle_setup.c
@@ -1004,7 +1004,7 @@ void TrainerBattleLoadArgsSecondTrainer(const u8 *data)
 
 void SetMapVarsToTrainerA(void)
 {
-    if (TRAINER_BATTLE_PARAM.objEventLocalIdA != 0)
+    if (TRAINER_BATTLE_PARAM.objEventLocalIdA != LOCALID_NONE)
     {
         gSpecialVar_LastTalked = TRAINER_BATTLE_PARAM.objEventLocalIdA;
         gSelectedObjectEvent = GetObjectEventIdByLocalIdAndMap(TRAINER_BATTLE_PARAM.objEventLocalIdA, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup);