diff --git a/src/battle_util.c b/src/battle_util.c
index e5851f7b84..4b3fc11aa9 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -6860,6 +6860,8 @@ u8 ItemBattleEffects(u8 caseID, u8 battlerId, bool8 moveTurn)
         switch (atkHoldEffect)
         {
         case HOLD_EFFECT_FLINCH:
+            if (GetBattlerAbility(gBattlerAttacker) == ABILITY_SERENE_GRACE)
+                atkHoldEffectParam *= 2;
             if (gBattleMoveDamage != 0  // Need to have done damage
                 && !(gMoveResultFlags & MOVE_RESULT_NO_EFFECT)
                 && TARGET_TURN_DAMAGED