diff --git a/bda/admin.py b/bda/admin.py
index 7139fe58..bcbc609c 100644
--- a/bda/admin.py
+++ b/bda/admin.py
@@ -17,7 +17,7 @@ class AttributionInline(admin.TabularInline):
 class ParticipantAdmin(admin.ModelAdmin):
     #inlines = [ChoixSpectacleInline]
     inlines = [AttributionInline]
-    def queryset(self, request):
+    def get_queryset(self, request):
         return Participant.objects.annotate(nb_places = Count('attributions'),
                                             total = Sum('attributions__price'))
     def nb_places(self, obj):
diff --git a/bda2/admin.py b/bda2/admin.py
index 854bfb74..84eebfa3 100644
--- a/bda2/admin.py
+++ b/bda2/admin.py
@@ -17,7 +17,7 @@ class AttributionInline(admin.TabularInline):
 class ParticipantAdmin(admin.ModelAdmin):
     #inlines = [ChoixSpectacleInline]
     inlines = [AttributionInline]
-    def queryset(self, request):
+    def get_queryset(self, request):
         return Participant.objects.annotate(nb_places = Count('attributions'),
                                             total = Sum('attributions__price'))
     def nb_places(self, obj):
diff --git a/bda3/admin.py b/bda3/admin.py
index ffcaea86..26b0beed 100644
--- a/bda3/admin.py
+++ b/bda3/admin.py
@@ -17,7 +17,7 @@ class AttributionInline(admin.TabularInline):
 class ParticipantAdmin(admin.ModelAdmin):
     #inlines = [ChoixSpectacleInline]
     inlines = [AttributionInline]
-    def queryset(self, request):
+    def get_queryset(self, request):
         return Participant.objects.annotate(nb_places = Count('attributions'),
                                             total = Sum('attributions__price'))
     def nb_places(self, obj):