diff --git a/adm/shop_admin/couponformupdate.php b/adm/shop_admin/couponformupdate.php
index 3a329531d..02f58835b 100644
--- a/adm/shop_admin/couponformupdate.php
+++ b/adm/shop_admin/couponformupdate.php
@@ -76,6 +76,9 @@ if($w == '') {
             if($j > 20)
                 die('Coupon ID Error');
         }
+
+        $j++;
+
     } while(1);
 
     $sql = " INSERT INTO {$g5['g5_shop_coupon_table']}