diff --git a/webapp/controller/RechargeController.class.php b/webapp/controller/RechargeController.class.php
index e095142..87c93c5 100644
--- a/webapp/controller/RechargeController.class.php
+++ b/webapp/controller/RechargeController.class.php
@@ -179,7 +179,7 @@ class RechargeController
                 }
 
                 $ret = $conn->execScript(
-                    'UPDATE recharge SET first_data=:first_data, recharge_diamond:=recharge_diamond, present_diamond=:present_diamond, modify_time=:modify_time' .
+                    'UPDATE recharge SET first_data=:first_data, recharge_diamond=:recharge_diamond, present_diamond=:present_diamond, modify_time=:modify_time' .
                         ' WHERE accountid=:accountid;',
                     array(
                         ':accountid' => $account_id,