diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 36e438ae1e..a5cce7c45d 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -12347,7 +12347,7 @@ static void Cmd_trywish(void)
         break;
     case 1: // heal effect
         PREPARE_MON_NICK_WITH_PREFIX_BUFFER(gBattleTextBuff1, gBattlerTarget, gWishFutureKnock.wishMonId[gBattlerTarget])
-        #if B_WISH >= GEN_5
+        #if B_WISH_HP_SOURCE >= GEN_5
             gBattleMoveDamage = max(1, gBattleMons[gWishFutureKnock.wishMonId[gBattlerTarget]].maxHP / 2);
         #else
             gBattleMoveDamage = max(1, gBattleMons[gBattlerTarget].maxHP / 2);