diff --git a/rhodecode/controllers/admin/users_groups.py b/rhodecode/controllers/admin/users_groups.py
--- a/rhodecode/controllers/admin/users_groups.py
+++ b/rhodecode/controllers/admin/users_groups.py
@@ -160,11 +160,12 @@ class UsersGroupsController(BaseControll
 
         try:
             UsersGroupModel().delete(id)
+            Session.commit()
             h.flash(_('successfully deleted users group'), category='success')
-            Session.commit()
         except UsersGroupsAssignedException, e:
             h.flash(e, category='error')
         except Exception:
+            log.error(traceback.format_exc())
             h.flash(_('An error occurred during deletion of users group'),
                     category='error')
         return redirect(url('users_groups'))