diff --git a/src/battle_main.c b/src/battle_main.c
index a4c55ce9b5..78e44956a4 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -6010,9 +6010,7 @@ void SetTypeBeforeUsingMove(u32 move, u32 battler)
         gBattleStruct->dynamicMoveType = TYPE_ELECTRIC | F_DYNAMIC_TYPE_SET;
 
     // Check if a gem should activate.
-    moveType = GetMoveType(move);
-    if (holdEffect == HOLD_EFFECT_GEMS
-        && moveType == ItemId_GetSecondaryId(heldItem))
+    if (holdEffect == HOLD_EFFECT_GEMS && GetMoveType(move) == ItemId_GetSecondaryId(heldItem))
     {
         gSpecialStatuses[battler].gemParam = GetBattlerHoldEffectParam(battler);
         gSpecialStatuses[battler].gemBoost = TRUE;