diff --git a/module/user/model.php b/module/user/model.php
index 517864814e..36c34ed4db 100644
--- a/module/user/model.php
+++ b/module/user/model.php
@@ -342,9 +342,9 @@ class userModel extends model
             }
         }
 
-        $this->dao->delete()->from(TABLE_USERGROUP)->where('account')->eq($oldUser->account)->exec();
         if($this->post->groups)
         {
+            $this->dao->delete()->from(TABLE_USERGROUP)->where('account')->eq($oldUser->account)->exec();
             foreach($this->post->groups as $groupID)
             {
                 $data->account = $this->post->account;