diff --git a/src/battle_util.c b/src/battle_util.c
index f047cc882b..59a71ee831 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -6719,6 +6719,10 @@ static u32 CalcMoveBasePowerAfterModifiers(u16 move, u8 battlerAtk, u8 battlerDe
             }
         }
         break;
+    case HOLD_EFFECT_PLATE:
+        if (moveType == ItemId_GetSecondaryId(gBattleMons[battlerAtk].item))
+            MulModifier(&modifier, holdEffectModifier);
+        break;
     }
 
     // move effect