diff --git a/src/battle_util.c b/src/battle_util.c
index 0d8972179a1..d4debdd0de1 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -3507,7 +3507,7 @@ u8 AtkCanceller_UnableToUseMove(u32 moveType)
         case CANCELLER_PARALYSED: // paralysis
             if (!gBattleStruct->isAtkCancelerForCalledMove
              && gBattleMons[gBattlerAttacker].status1 & STATUS1_PARALYSIS
-             && !(B_MAGIC_GUARD >= GEN_4 && GetBattlerAbility(gBattlerAttacker) == ABILITY_MAGIC_GUARD)
+             && !(B_MAGIC_GUARD == GEN_4 && GetBattlerAbility(gBattlerAttacker) == ABILITY_MAGIC_GUARD)
              && !RandomPercentage(RNG_PARALYSIS, 75))
             {
                 gProtectStructs[gBattlerAttacker].prlzImmobility = TRUE;