diff --git a/src/battle_z_move.c b/src/battle_z_move.c
index 9d8e785d2d..d2beb3a49e 100644
--- a/src/battle_z_move.c
+++ b/src/battle_z_move.c
@@ -167,7 +167,7 @@ bool32 IsViableZMove(u8 battlerId, u16 move)
         return FALSE;
     
     #ifdef ITEM_Z_RING
-    if ((GetBattlerPosition(battlerId) == B_POSITION_PLAYER_LEFT || (!gBattleTypeFlags & BATTLE_TYPE_MULTI) && GetBattlerPosition(battlerId) == B_POSITION_PLAYER_RIGHT) && !CheckBagHasItem(ITEM_Z_RING, 1))
+    if ((GetBattlerPosition(battlerId) == B_POSITION_PLAYER_LEFT || (!(gBattleTypeFlags & BATTLE_TYPE_MULTI) && GetBattlerPosition(battlerId) == B_POSITION_PLAYER_RIGHT)) && !CheckBagHasItem(ITEM_Z_RING, 1))
         return FALSE;
     #endif