diff --git a/src/c3nav/editor/wrappers.py b/src/c3nav/editor/wrappers.py
index 9e7af3ca..4ea1b971 100644
--- a/src/c3nav/editor/wrappers.py
+++ b/src/c3nav/editor/wrappers.py
@@ -412,7 +412,7 @@ class BaseQueryWrapper(BaseWrapper):
                 # if the check is just 'pk' or the name or the name of the primary key, return the mathing object
                 if is_created_pk(filter_value):
                     return Q(pk__in=()), set([filter_value])
-                if int(filter_value) in self._changeset.deleted_existing.get(model, ()):
+                if filter_value is None or int(filter_value) in self._changeset.deleted_existing.get(model, ()):
                     return Q(pk__in=()), set()
                 return q, set()
             elif segments == ['in']: