diff --git a/app/common/repositories/store/order/StoreGroupOrderRepository.php b/app/common/repositories/store/order/StoreGroupOrderRepository.php
index 55082cbc..95cba808 100644
--- a/app/common/repositories/store/order/StoreGroupOrderRepository.php
+++ b/app/common/repositories/store/order/StoreGroupOrderRepository.php
@@ -131,6 +131,7 @@ class StoreGroupOrderRepository extends BaseRepository
         }
         if (!empty($order->interest)) {
             $interest = $order->interest->calculateInterest();
+            $order->interest->interest = $interest;
             $order->interest->total_amount = bcadd($order->interest->total_price, $interest, 2);
         }
         return $order;