diff --git a/rhodecode/model/users_group.py b/rhodecode/model/users_group.py
--- a/rhodecode/model/users_group.py
+++ b/rhodecode/model/users_group.py
@@ -8,6 +8,7 @@
     :created_on: Oct 1, 2011
     :author: nvinot
     :copyright: (C) 2011-2011 Nicolas Vinot <aeris@imirhil.fr>
+    :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
@@ -137,7 +138,6 @@ class UsersGroupModel(BaseModel):
         new.permission = perm
         self.sa.add(new)
 
-
     def revoke_perm(self, users_group, perm):
         if not isinstance(perm, Permission):
             raise Exception('perm needs to be an instance of Permission class')