diff --git a/app/controller/admin/system/merchant/Merchant.php b/app/controller/admin/system/merchant/Merchant.php
index 14dbbc9d..4435efbc 100644
--- a/app/controller/admin/system/merchant/Merchant.php
+++ b/app/controller/admin/system/merchant/Merchant.php
@@ -146,7 +146,7 @@ class Merchant extends BaseController
         unset($data['mer_account'], $data['mer_password']);
         $margin = $this->repository->checkMargin($id, $data['type_id']);
         $data['margin'] = $margin['margin'];
-        $data['is_margin'] = $margin['is_margin'];
+        $data['is_margin'] = $data['paid_margin'] > 0 ? MerchantRepository::PaidMargin : $margin['is_margin'];
         $data['ot_margin'] = $data['paid_margin'];
         $datas=$data;
         $this->repository->update($id, $datas);