diff --git a/module/project/lang/en.php b/module/project/lang/en.php
index 9e839cc5f4..5d4cfe3c2c 100644
--- a/module/project/lang/en.php
+++ b/module/project/lang/en.php
@@ -254,5 +254,6 @@ $lang->project->featureBar['task']['needconfirm']  = 'Story Changed';
 $lang->project->featureBar['task']['status']       = $lang->project->statusSelects[''];
 
 $lang->project->treeLevel = array();
+$lang->project->treeLevel['root']    = 'Show Root';
 $lang->project->treeLevel['story']   = 'Show Story';
 $lang->project->treeLevel['task']    = 'Show Task';
diff --git a/module/project/lang/zh-cn.php b/module/project/lang/zh-cn.php
index 399177b4dd..15da911424 100644
--- a/module/project/lang/zh-cn.php
+++ b/module/project/lang/zh-cn.php
@@ -254,5 +254,7 @@ $lang->project->featureBar['task']['needconfirm']  = '需求变动';
 $lang->project->featureBar['task']['status']       = $lang->project->statusSelects[''];
 
 $lang->project->treeLevel = array();
+$lang->project->treeLevel['root']    = '全部折叠';
 $lang->project->treeLevel['story']   = '显示需求';
 $lang->project->treeLevel['task']    = '显示任务';
+