diff --git a/app/Service/PaymentService.php b/app/Service/PaymentService.php
index 903a3d6..c2b124f 100644
--- a/app/Service/PaymentService.php
+++ b/app/Service/PaymentService.php
@@ -278,7 +278,7 @@ class PaymentService extends AbstractService
                 'sub_order_no' => $feeSubOrderNo,
                 'sub_out_order_no' => $feeSubOrderNo,
                 'split_amount' => $order->amount - $fee,
-                'contract_no' => $platformAccount->contract_no,
+                'contract_no' => $mainAccount->contract_no,
                 'seller_flag' => 0,
             ];
         }