diff --git a/tko_web_sessions_management/main.py b/tko_web_sessions_management/main.py
old mode 100644
new mode 100755
index 51ddf75..4cb8cbb
--- a/tko_web_sessions_management/main.py
+++ b/tko_web_sessions_management/main.py
@@ -98,7 +98,7 @@ def check_session(self, db, login, password):
                     else:
                         # check user groups calendar
                         for group in user.groups_id:
-                            if group.login_calendar_id:
+                            if group.sudo().login_calendar_id:
                                 calendar_set += 1
                                 attendances = attendance_obj.search(request.cr,
                                                                     request.uid, [('calendar_id', '=',