diff --git a/bda/admin.py b/bda/admin.py
index 83c89ea5..60d3c1ba 100644
--- a/bda/admin.py
+++ b/bda/admin.py
@@ -56,7 +56,7 @@ class AttributionInline(admin.TabularInline):
     def get_queryset(self, request):
         qs = super().get_queryset(request)
         if self.listing is not None:
-            qs.filter(spectacle__listing=self.listing)
+            qs = qs.filter(spectacle__listing=self.listing)
         return qs