diff --git a/module/doc/lang/de.php b/module/doc/lang/de.php
index 3dcb5ac510..1d0a0c9f86 100644
--- a/module/doc/lang/de.php
+++ b/module/doc/lang/de.php
@@ -257,6 +257,7 @@ $lang->doc->list            = 'List';
 $lang->doc->zentaoData      = 'Zentao Data';
 $lang->doc->emptyError      = 'Not empty';
 $lang->doc->caselib         = 'Case Library';
+$lang->doc->customSearch    = 'Custom Search';
 
 $lang->doc->zentaoList = array();
 $lang->doc->zentaoList['story']          = $lang->SRCommon;
diff --git a/module/doc/lang/en.php b/module/doc/lang/en.php
index f0402911f2..c215de5df8 100644
--- a/module/doc/lang/en.php
+++ b/module/doc/lang/en.php
@@ -257,6 +257,7 @@ $lang->doc->list            = 'List';
 $lang->doc->zentaoData      = 'Zentao Data';
 $lang->doc->emptyError      = 'Not empty';
 $lang->doc->caselib         = 'Case Library';
+$lang->doc->customSearch    = 'Custom Search';
 
 $lang->doc->zentaoList = array();
 $lang->doc->zentaoList['story']          = $lang->SRCommon;
diff --git a/module/doc/lang/fr.php b/module/doc/lang/fr.php
index d50d61bdc1..eb97eb046b 100644
--- a/module/doc/lang/fr.php
+++ b/module/doc/lang/fr.php
@@ -257,6 +257,7 @@ $lang->doc->list            = 'List';
 $lang->doc->zentaoData      = 'Zentao Data';
 $lang->doc->emptyError      = 'Not empty';
 $lang->doc->caselib         = 'Case Library';
+$lang->doc->customSearch    = 'Custom Search';
 
 $lang->doc->zentaoList = array();
 $lang->doc->zentaoList['story']          = $lang->SRCommon;
diff --git a/module/doc/lang/zh-cn.php b/module/doc/lang/zh-cn.php
index c67a024098..43a37eef1a 100644
--- a/module/doc/lang/zh-cn.php
+++ b/module/doc/lang/zh-cn.php
@@ -257,6 +257,7 @@ $lang->doc->list            = '列表';
 $lang->doc->zentaoData      = '禅道数据';
 $lang->doc->emptyError      = '不能为空';
 $lang->doc->caselib         = '用例库';
+$lang->doc->customSearch    = '自定义搜索';
 
 $lang->doc->zentaoList = array();
 $lang->doc->zentaoList['story']          = $lang->SRCommon;