diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index 77ef3599800..1c5098603ce 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -1201,6 +1201,7 @@ property_traverse(PyObject *self, visitproc visit, void *arg)
 	VISIT(prop_get);
 	VISIT(prop_set);
 	VISIT(prop_del);
+	VISIT(prop_doc);
 
 	return 0;
 }