diff --git a/app/Admin/Forms/Settings/Dealer.php b/app/Admin/Forms/Settings/Dealer.php
index 7ebf1b22..02b1b5d9 100644
--- a/app/Admin/Forms/Settings/Dealer.php
+++ b/app/Admin/Forms/Settings/Dealer.php
@@ -84,9 +84,9 @@ class Dealer extends Form
         $dealerSettings = (array) Setting::where('key', 'dealer')->value('value');
         return [
             'fee_rate'=>$dealerSettings['fee_rate'] ?? '',
-            'upgrade_amount_'.DealerLvl::Contracted->value => $dealerSettings['upgrade_amount_'.DealerLvl::Contracted->value],
-            'upgrade_amount_'.DealerLvl::Special->value => $dealerSettings['upgrade_amount_'.DealerLvl::Special->value],
-            'upgrade_amount_'.DealerLvl::Gold->value => $dealerSettings['upgrade_amount_'.DealerLvl::Gold->value],
+            'upgrade_amount_'.DealerLvl::Contracted->value => $dealerSettings['upgrade_amount_'.DealerLvl::Contracted->value]??'',
+            'upgrade_amount_'.DealerLvl::Special->value => $dealerSettings['upgrade_amount_'.DealerLvl::Special->value]??'',
+            'upgrade_amount_'.DealerLvl::Gold->value => $dealerSettings['upgrade_amount_'.DealerLvl::Gold->value]??'',
             'bank'=>$dealerSettings['bank'] ?? [],
             'alipay'=>$dealerSettings['alipay'] ?? [],
             'wechat' =>$dealerSettings['wechat'] ?? [],