diff --git a/hotel_calendar_channel_connector/models/inherited_hotel_calendar_management.py b/hotel_calendar_channel_connector/models/inherited_hotel_calendar_management.py
index 35cb84ef1..7f830b21f 100644
--- a/hotel_calendar_channel_connector/models/inherited_hotel_calendar_management.py
+++ b/hotel_calendar_channel_connector/models/inherited_hotel_calendar_management.py
@@ -62,7 +62,7 @@ class HotelCalendarManagement(models.TransientModel):
 
     @api.multi
     def save_changes(self, pricelist_id, restriction_id, pricelist,
-                     restrictions, availability=False):
+                     restrictions, availability={}):
         res = super(HotelCalendarManagement, self).save_changes(
             pricelist_id,
             restriction_id,