diff --git a/webapp/controller/TempToolsController.class.php b/webapp/controller/TempToolsController.class.php
index 0072da54..d6bcf3c9 100644
--- a/webapp/controller/TempToolsController.class.php
+++ b/webapp/controller/TempToolsController.class.php
@@ -111,7 +111,7 @@ class TempToolsController extends BaseController {
         }
         {
             foreach ($accounts as &$account) {
-                $row = $conn->execQuery(
+                $row = $conn->execQueryOne(
                     'SELECT MAX(hero_lv) AS max_hero_lv FROM t_hero WHERE account_id=:account_id',
                     array(
                         ':account_id' => $account['account_id'],
@@ -122,7 +122,7 @@ class TempToolsController extends BaseController {
         }
         {
             foreach ($accounts as &$account) {
-                $row = $conn->execQuery(
+                $row = $conn->execQueryOne(
                     'SELECT MAX(quality) AS max_hero_quality FROM t_hero WHERE account_id=:account_id',
                     array(
                         ':account_id' => $account['account_id'],