diff --git a/src/api/controllers/lottery.controller.ts b/src/api/controllers/lottery.controller.ts
index 42a6103..20f795f 100644
--- a/src/api/controllers/lottery.controller.ts
+++ b/src/api/controllers/lottery.controller.ts
@@ -42,12 +42,16 @@ class LotteryController extends BaseController {
         name = couponMap.get(reward.coupon).name
         couponUrl = reward.icon || getCouponUrl(shop.id, reward.coupon)
       }
+      let rewardType = reward.rewardType
+      if (reward.coupon === EMPTY) {
+        rewardType = 2
+      }
       rewardList.push({
         coupon: reward.coupon,
         name,
         count: reward.count,
         couponUrl,
-        rewardType: reward.rewardType,
+        rewardType: rewardType,
       })
     }
     return rewardList