diff --git a/module/install/lang/en.php b/module/install/lang/en.php
index d8b53ebdda..4378197d5d 100644
--- a/module/install/lang/en.php
+++ b/module/install/lang/en.php
@@ -9,6 +9,8 @@
  * @version     $Id$
  * @link        http://www.zentao.net
  */
+$lang->install = new stdclass();
+
 $lang->install->common  = 'Install';
 $lang->install->next    = 'Next';
 $lang->install->pre     = 'Back';
diff --git a/module/install/lang/zh-cn.php b/module/install/lang/zh-cn.php
index fc6e0271e3..cf923d5774 100644
--- a/module/install/lang/zh-cn.php
+++ b/module/install/lang/zh-cn.php
@@ -9,6 +9,8 @@
  * @version     $Id$
  * @link        http://www.zentao.net
  */
+$lang->install = new stdclass();
+
 $lang->install->common  = '安装';
 $lang->install->next    = '下一步';
 $lang->install->pre     = '返回';