diff --git a/server/www/teleport/webroot/app/controller/user.py b/server/www/teleport/webroot/app/controller/user.py
index 8f22c34..18a63de 100755
--- a/server/www/teleport/webroot/app/controller/user.py
+++ b/server/www/teleport/webroot/app/controller/user.py
@@ -5,6 +5,7 @@ import json
 import os
 import time
 import urllib
+import urllib.parse
 
 import tornado.gen
 from app.base import mail
@@ -117,7 +118,7 @@ class ResetPasswordHandler(TPBaseHandler):
 
 class ChangeExpiredPasswordHandler(TPBaseHandler):
     def get(self):
-        _username = urllib.unquote(self.get_argument('username', None))
+        _username = urllib.parse.unquote(self.get_argument('username', None))
         if _username is None:
             return self.redirect('/')