diff --git a/lemarche/www/dashboard_favorites/tests.py b/lemarche/www/dashboard_favorites/tests.py
index 286a3ae48..9e39909ea 100644
--- a/lemarche/www/dashboard_favorites/tests.py
+++ b/lemarche/www/dashboard_favorites/tests.py
@@ -34,5 +34,8 @@ def test_only_favorite_list_user_can_view_favorite_list_detail(self):
         # favorite list user
         self.client.force_login(self.user_favorite_list)
         url = reverse("dashboard_favorites:list_detail", args=[self.favorite_list_1.slug])
-        response = self.client.get(url)
-        self.assertEqual(response.status_code, 200)
+
+        # check number of queries
+        with self.assertNumQueries(6):
+            response = self.client.get(url)
+            self.assertEqual(response.status_code, 200)
diff --git a/lemarche/www/dashboard_favorites/views.py b/lemarche/www/dashboard_favorites/views.py
index d2c843ba0..294571be8 100644
--- a/lemarche/www/dashboard_favorites/views.py
+++ b/lemarche/www/dashboard_favorites/views.py
@@ -64,7 +64,7 @@ def get_success_message(self, cleaned_data):
 
 class DashboardFavoriteListDetailView(FavoriteListOwnerRequiredMixin, DetailView):
     template_name = "favorites/dashboard_favorite_list_detail.html"
-    queryset = FavoriteList.objects.prefetch_related("siaes").all()
+    queryset = FavoriteList.objects.prefetch_related("siaes", "siaes__activities__sector_group").all()
     context_object_name = "favorite_list"
 
     def get_context_data(self, **kwargs):