diff --git a/bda/views.py b/bda/views.py
index 7d97ca0f..624f0a3b 100644
--- a/bda/views.py
+++ b/bda/views.py
@@ -38,7 +38,7 @@ def etat_places(request, tirage_id):
         .all() \
         .values('spectacle','spectacle__title') \
         .annotate(total=models.Count('spectacle'))
-    spectacles = Spectacle.objects.filter(tirage=tirage).all()
+    spectacles = tirage.spectacle_set.all()
     spectacles_dict = {}
     total = 0
     for spectacle in spectacles:
@@ -142,7 +142,7 @@ def inscription(request, tirage_id):
                     "choices": choices})
     def formfield_callback(f, **kwargs):
         if f.name == "spectacle":
-            kwargs['queryset'] = Spectacle.objects.filter(tirage=tirage)
+            kwargs['queryset'] = tirage.spectacle_set
         return f.formfield(**kwargs)
     BdaFormSet = inlineformset_factory(
             Participant,
@@ -189,8 +189,8 @@ def do_tirage(request, tirage_id):
     tirage_elt.save()
     start = time.time()
     data = {}
-    shows = Spectacle.objects.filter(tirage=tirage_elt).select_related().all()
-    members = Participant.objects.filter(tirage=tirage_elt).all()
+    shows = tirage_elt.spectacle_set.select_related().all()
+    members = tirage_elt.spectacle_set.all()
     choices = ChoixSpectacle.objects.filter(spectacle__tirage=tirage_elt).order_by(
             'participant', 'priority').select_related().all()
     algo = Algorithm(shows, members, choices)
@@ -324,13 +324,13 @@ class SpectacleListView(ListView):
 @buro_required
 def unpaid(request, tirage_id):
     tirage = get_object_or_404(Tirage, id=tirage_id)
-    unpaid = Participant.objects.filter(tirage=tirage, paid=False).all()
+    unpaid = tirage.participant_set.filter(paid=False).all()
     return render(request, "bda-unpaid.html", {"unpaid": unpaid})
 
 @buro_required                   
 def liste_spectacles_ics(request, tirage_id):
     tirage = get_object_or_404(Tirage, id=tirage_id)
-    spectacles = Spectacle.objects.filter(tirage=tirage).order_by("date").all()
+    spectacles = tirage.spectacle_set.order_by("date").all()
     for spectacle in spectacles:
         spectacle.dtend = spectacle.date + timedelta(seconds=7200)
     return render(request, "liste_spectacles.ics",