diff --git a/webapp/controller/TankController.class.php b/webapp/controller/TankController.class.php
index bd37f78..d288f88 100644
--- a/webapp/controller/TankController.class.php
+++ b/webapp/controller/TankController.class.php
@@ -418,7 +418,7 @@ class TankController{
         }
         $tank_id = $_REQUEST['tank_id'];
         $free = $_REQUEST['free'];
-        $row = $conn->execQueryOne('SELECT tank_level, fragment_num， fragment_id FROM tank WHERE accountid=:account_id AND tank_id=:tank_id;',
+        $row = $conn->execQueryOne('SELECT tank_level, fragment_num, fragment_id FROM tank WHERE accountid=:account_id AND tank_id=:tank_id;',
                                    array(
                                        ':account_id' => $account_id,
                                        ':tank_id' => $tank_id