diff --git a/bda/views.py b/bda/views.py
index a3b28af3..ca14c08f 100644
--- a/bda/views.py
+++ b/bda/views.py
@@ -670,9 +670,12 @@ class SpectacleListView(ListView):
 @buro_required
 def unpaid(request, tirage_id):
     tirage = get_object_or_404(Tirage, id=tirage_id)
-    unpaid = tirage.participant_set \
-        .annotate(nb_attributions=Count('attribution')) \
-        .filter(paid=False, nb_attributions__gt=0).all()
+    unpaid = (
+        tirage.participant_set
+        .annotate(nb_attributions=Count('attribution'))
+        .filter(paid=False, nb_attributions__gt=0)
+        .select_related('user')
+    )
     return render(request, "bda-unpaid.html", {"unpaid": unpaid})