diff --git a/module/misc/control.php b/module/misc/control.php
index 202fcd4b37..eb2db80c70 100644
--- a/module/misc/control.php
+++ b/module/misc/control.php
@@ -129,10 +129,10 @@ class misc extends control
     public function qrCode()
     {
         $loginAPI = common::getSysURL() . $this->config->webRoot;
-        if($this->loadModel('user')->isLogon()) $loginAPI .= "?sid=" . session_ID();
+        if($this->loadModel('user')->isLogon()) $withSessionLoginAPI = $loginAPI . "?sid=" . session_ID();
 
         if(!extension_loaded('gd')) die(printf($this->lang->misc->noGDLib, $loginAPI));
         $ciqrcode = $this->app->loadClass('qrcode');
-        QRcode::png($loginAPI, false, 4, 9);
+        QRcode::png($withSessionLoginAPI, false, 4, 9);
     }
 }
diff --git a/module/misc/lang/en.php b/module/misc/lang/en.php
index 0dd09b0a73..4e68be0b12 100644
--- a/module/misc/lang/en.php
+++ b/module/misc/lang/en.php
@@ -46,5 +46,5 @@ $lang->misc->zentao->service['install']    = 'Install service';
 $lang->misc->zentao->service['fixissue']   = 'Issue support';
 $lang->misc->zentao->service['servicemore']= 'More...';
 
-$lang->misc->noGDLib   = "the entrance of mobile browser： %s.";
+$lang->misc->noGDLib   = "PHP don't has GD extensions. The entrance of mobile browser： %s.";
 $lang->misc->copyright = "Copyright &copy;2009-2013 <a href='http://www.cnezsoft.com' target='_blank'>Nature EasySoft Network Tecnology Co.ltd, QingDao, China</a>";
diff --git a/module/misc/lang/zh-cn.php b/module/misc/lang/zh-cn.php
index 27cd8865e8..08a0fefef6 100644
--- a/module/misc/lang/zh-cn.php
+++ b/module/misc/lang/zh-cn.php
@@ -46,5 +46,5 @@ $lang->misc->zentao->service['install']    = '禅道安装服务';
 $lang->misc->zentao->service['fixissue']   = '禅道问题解决';
 $lang->misc->zentao->service['servicemore']= '更多服务...';
 
-$lang->misc->noGDLib   = "请用手机浏览器直接访问：%s";
+$lang->misc->noGDLib   = "您的PHP没有安装GD库扩展，请用手机浏览器直接访问：%s";
 $lang->misc->copyright = "版权所有 &copy;2009-2013 <a href='http://www.cnezsoft.com' target='_blank'>青岛易软天创网络科技有限公司</a>";