diff --git a/addons/mcs_appointment_booking/models/appointment_booking.py b/addons/mcs_appointment_booking/models/appointment_booking.py
index 1b63760..fcaef44 100644
--- a/addons/mcs_appointment_booking/models/appointment_booking.py
+++ b/addons/mcs_appointment_booking/models/appointment_booking.py
@@ -105,6 +105,7 @@ class McsAppointmentBooking(models.Model):
             else:
                 booking.calendar_event_id = self.env["calendar.event"].sudo().create(event_vals).id
             booking.state = "confirmed"
+        return True
 
     def action_cancel(self):
         for booking in self:
@@ -112,3 +113,4 @@ class McsAppointmentBooking(models.Model):
             if booking.calendar_event_id:
                 booking.calendar_event_id.sudo().unlink()
                 booking.calendar_event_id = False
+        return True