diff --git a/event_track_calendar_event/__manifest__.py b/event_track_calendar_event/__manifest__.py
index d8bef21..9ed5c8b 100644
--- a/event_track_calendar_event/__manifest__.py
+++ b/event_track_calendar_event/__manifest__.py
@@ -1,5 +1,3 @@
-# Copyright 2016-2020 Akretion France (<https://www.akretion.com>)
-# @author: Alexis de Lattre <alexis.delattre@akretion.com>
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
 
 {
diff --git a/event_track_calendar_event/models/calendar_event.py b/event_track_calendar_event/models/calendar_event.py
index 4fa619e..ff1dcae 100644
--- a/event_track_calendar_event/models/calendar_event.py
+++ b/event_track_calendar_event/models/calendar_event.py
@@ -13,5 +13,6 @@ class CalendarEvent(models.Model):
         for event in res:
             if event.event_track_id:
                 event.event_track_id.sync_calendar_event()
+        return res