diff --git a/src/pretix/control/forms/filter.py b/src/pretix/control/forms/filter.py
index dbb30743bc..0e4875e62b 100644
--- a/src/pretix/control/forms/filter.py
+++ b/src/pretix/control/forms/filter.py
@@ -132,7 +132,7 @@ class OrderFilterForm(FilterForm):
             matching_positions = OrderPosition.objects.filter(
                 Q(order=OuterRef('pk')) & Q(
                     Q(attendee_name_cached__icontains=u) | Q(attendee_email__icontains=u)
-                    | Q(secret__istartswith=u)
+                    | Q(secret__istartswith=u) | Q(voucher__code__icontains=u)
                 )
             ).values('id')