diff --git a/module/upgrade/lang/en.php b/module/upgrade/lang/en.php
index 7f1868520d..e8e8c8915d 100644
--- a/module/upgrade/lang/en.php
+++ b/module/upgrade/lang/en.php
@@ -137,4 +137,7 @@ $lang->upgrade->createExecutionTip = <<<EOT
 <p>ZenTao will upgrade existing {$lang->projectCommon} as execution.</p>
 <p>After the upgrade, the data of existing {$lang->projectCommon} will be in a Project - Execute of the new version .</p>
 EOT;
+
+$lang->upgrade->projectNameUnique = "『%s』has the same『%s』. Click {$lang->projectCommon} on the left and edit the name of {$lang->projectCommon}.";
+
 include dirname(__FILE__) . '/version.php';
diff --git a/module/upgrade/lang/zh-cn.php b/module/upgrade/lang/zh-cn.php
index 0bffebf74c..572af4ccc8 100644
--- a/module/upgrade/lang/zh-cn.php
+++ b/module/upgrade/lang/zh-cn.php
@@ -137,4 +137,7 @@ $lang->upgrade->createExecutionTip = <<<EOT
 <p>系统会把历史的{$lang->projectCommon}作为执行进行升级。</p>
 <p>升级后历史的{$lang->projectCommon}数据将对应新版本中项目下的执行。</p>
 EOT;
+
+$lang->upgrade->projectNameUnique = "『%s』已经有『%s』这条记录了。请至左侧{$lang->projectCommon}处修改该{$lang->projectCommon}名称。";
+
 include dirname(__FILE__) . '/version.php';
diff --git a/module/upgrade/model.php b/module/upgrade/model.php
index 7012c0f7aa..0cfe7e9855 100644
--- a/module/upgrade/model.php
+++ b/module/upgrade/model.php
@@ -4416,11 +4416,12 @@ class upgradeModel extends model
             else
             {
                 /* Use historical projects as project upgrades. */
-
                 $projects = $this->dao->select('id,name,begin,end,status,PM,acl')->from(TABLE_PROJECT)->where('id')->in($projectIdList)->fetchAll('id');
 
                 $hasExistedProjects = $this->dao->select('name')->from(TABLE_PROJECT)->where('type')->eq('project')->fetchPairs('name');
 
+                $this->lang->error->unique = $this->lang->upgrade->projectNameUnique;
+
                 $nameList = array();
                 foreach($projectIdList as $projectID)
                 {