diff --git a/netbox/netbox/graphql/filter_mixins.py b/netbox/netbox/graphql/filter_mixins.py
index bfb958563..322435c72 100644
--- a/netbox/netbox/graphql/filter_mixins.py
+++ b/netbox/netbox/graphql/filter_mixins.py
@@ -87,7 +87,7 @@ def map_strawberry_type(field):
         pass
     elif issubclass(type(field), django_filters.NumberFilter):
         should_create_function = True
-        attr_type = int
+        attr_type = int | None
     elif issubclass(type(field), django_filters.ModelMultipleChoiceFilter):
         should_create_function = True
         attr_type = List[str] | None