diff --git a/setup/update_scripts/update-from-2.4.1-to-2.4.2.php b/setup/update_scripts/update-from-2.4.1-to-2.4.2.php
index b34a2ecb..72ded130 100644
--- a/setup/update_scripts/update-from-2.4.1-to-2.4.2.php
+++ b/setup/update_scripts/update-from-2.4.1-to-2.4.2.php
@@ -3,7 +3,7 @@
  * @Author: printempw
  * @Date:   2016-04-05 14:33:00
  * @Last Modified by:   printempw
- * @Last Modified time: 2016-04-05 14:46:17
+ * @Last Modified time: 2016-04-05 14:58:04
  */
 
 if (!defined('BASE_DIR')) exit('请运行 /setup/update.php 来升级');
@@ -12,13 +12,13 @@ if (Option::get('current_version') == "2.4.1") {
 
     if (Option::get('encryption') == "") Option::set('encryption', 'MD5');
 
-    $db = new Database('options');
+    $db = new Database\Database('options');
 
     $table_name = DB_PREFIX."users";
     $sqls[0] = "ALTER TABLE `$table_name` CHANGE `hash_steve` `hash_steve` VARCHAR(64) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT ''";
     $sqls[1] = "ALTER TABLE `$table_name` CHANGE `hash_alex`  `hash_alex`  VARCHAR(64) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT ''";
     $sqls[2] = "ALTER TABLE `$table_name` CHANGE `hash_cape`  `hash_cape`  VARCHAR(64) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT ''";
-    $sqls[2] = "ALTER TABLE `$table_name` CHANGE `last_modified` `last_modified` DATETIME DEFAULT CURRENT_TIMESTAMP";
+    $sqls[3] = "ALTER TABLE `$table_name` CHANGE `last_modified` `last_modified` DATETIME DEFAULT CURRENT_TIMESTAMP";
 
     foreach ($sqls as $sql) {
         $db->query($sql);