diff --git a/bonus-modules/bonus-smart-canteen/src/main/java/com/bonus/canteen/core/merchant/api/MercMerchantApi.java b/bonus-modules/bonus-smart-canteen/src/main/java/com/bonus/canteen/core/merchant/api/MercMerchantApi.java
index d7c71ac9..b6cf98e9 100644
--- a/bonus-modules/bonus-smart-canteen/src/main/java/com/bonus/canteen/core/merchant/api/MercMerchantApi.java
+++ b/bonus-modules/bonus-smart-canteen/src/main/java/com/bonus/canteen/core/merchant/api/MercMerchantApi.java
@@ -39,11 +39,11 @@ public class MercMerchantApi {
 
    public String getMerchantName() {
       return (String) Executors.readInTenant(TenantContextHolder.getTenantId(), () -> {
-         return this.mercMerchantMapper.selectOne(Wrappers.lambdaQuery(MercMerchant.class)
-                 .select(MercMerchant::getMerchantName)).getMerchantName();
+         return ((MercMerchant)this.mercMerchantMapper.selectOne(Wrappers.lambdaQuery(MercMerchant.class)
+                 .select(MercMerchant::getMerchantName))).getMerchantName();
       });
    }
-//
+
 //   public Long registerMerchant(MercMerchantAddDTO mercMerchant) {
 //      return this.mercMerchantService.register(mercMerchant);
 //   }