diff --git a/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java b/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java
index 6d1f542..d541c4b 100644
--- a/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java
+++ b/src/main/java/com/aida/seller/module/order/service/OrderServiceImpl.java
@@ -87,7 +87,8 @@ public class OrderServiceImpl extends ServiceImpl<OrderInfoMapper, OrderInfoEnti
                 .stream()
                 .map(ListingEntity::getViewCount)
                 .filter(v -> v != null)
-                .reduce(0L, Long::sum);
+                .mapToLong(v -> v)
+                .sum();
 
         return new OrderSummaryVO(totalRevenue, totalPurchases, totalViews);
     }