diff --git a/db/update16.3.sql b/db/update16.3.sql
index 24a58deed7..00a9d39107 100644
--- a/db/update16.3.sql
+++ b/db/update16.3.sql
@@ -3,3 +3,5 @@ ALTER TABLE `zt_product` ADD `vision` varchar(10) NOT NULL DEFAULT 'rnd' AFTER `
 ALTER TABLE `zt_doclib` ADD `vision` varchar(10) NOT NULL DEFAULT 'rnd' AFTER `order`;
 ALTER TABLE `zt_task` ADD `vision` varchar(10) NOT NULL DEFAULT 'rnd' AFTER `deleted`;
 ALTER TABLE `zt_group` ADD `vision` varchar(10) NOT NULL DEFAULT 'rnd' AFTER `project`;
+ALTER TABLE `zt_lang` ADD `vision` varchar(10) NOT NULL DEFAULT 'rnd' AFTER `system`;
+ALTER TABLE `zt_lang` DROP INDEX `lang`, ADD UNIQUE `lang` (`lang`,`module`,`section`,`key`,`vision`);
diff --git a/db/zentao.sql b/db/zentao.sql
index c774c431df..7760fc7ab8 100644
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -792,8 +792,9 @@ CREATE TABLE IF NOT EXISTS `zt_lang` (
   `key` varchar(60) NOT NULL,
   `value` text NOT NULL,
   `system` enum('0','1') NOT NULL default '1',
+  `vision` varchar(10) NOT NULL DEFAULT 'rnd',
   PRIMARY KEY  (`id`),
-  UNIQUE KEY `lang` (`lang`,`module`,`section`,`key`)
+  UNIQUE KEY `lang` (`lang`,`module`,`section`,`key`,`vision`)
 ) ENGINE=MyISAM  DEFAULT CHARSET=utf8;
 -- DROP TABLE IF EXISTS `zt_log`;
 CREATE TABLE IF NOT EXISTS `zt_log` (