diff --git a/webapp/controller/UserController.class.php b/webapp/controller/UserController.class.php
index c8234006..01570bd6 100644
--- a/webapp/controller/UserController.class.php
+++ b/webapp/controller/UserController.class.php
@@ -809,7 +809,9 @@ class UserController extends BaseAuthedController {
         $address = strtolower($rspObj['data']['address']);
         $oldUser = User::findByAddress($address);
         if ($oldUser) {
+            if ($oldUser['account_id'] != myself()->_getAccountId()) {
 
+            }
         } else {
             User::Update(array(
                 'address' => $address