diff --git a/addons/calendar/models/calendar.py b/addons/calendar/models/calendar.py
index 53eb5e867ea..0108a3ddd5d 100644
--- a/addons/calendar/models/calendar.py
+++ b/addons/calendar/models/calendar.py
@@ -1371,7 +1371,8 @@ class Meeting(models.Model):
                 rrule_type=False,
                 rrule='',
                 recurrency=False,
-                final_date=datetime.strptime(data.get('start'), DEFAULT_SERVER_DATETIME_FORMAT if data['allday'] else DEFAULT_SERVER_DATETIME_FORMAT) + timedelta(hours=values.get('duration', False) or data.get('duration'))
+                final_date=False,
+                end_type=False
             )
 
             # do not copy the id