diff --git a/calebasse/agenda/appointments.py b/calebasse/agenda/appointments.py
index ac7e7e25..c037514a 100644
--- a/calebasse/agenda/appointments.py
+++ b/calebasse/agenda/appointments.py
@@ -141,7 +141,8 @@ def get_daily_appointments(date, worker, service, time_tables, events, holidays)
     appointments = []
     activity = {'absences': []}
 
-    timetables_set = IntervalSet((t.to_interval(date) for t in time_tables))
+    service_time_tables = time_tables.filter(services=service)
+    timetables_set = IntervalSet((t.to_interval(date) for t in service_time_tables))
     holidays_set = IntervalSet((h.to_interval(date) for h in holidays))
     busy_occurrences_set = IntervalSet((o.to_interval() for o in events if not o.is_event_absence() and service in o.services.all()))
     for free_time in timetables_set - (busy_occurrences_set+holidays_set):