diff --git a/gramps/gen/relationship.py b/gramps/gen/relationship.py index 50ae852aa..0517bf1e6 100644 --- a/gramps/gen/relationship.py +++ b/gramps/gen/relationship.py @@ -1852,7 +1852,7 @@ class RelationshipCalculator(object): #signals are disconnected on close of old database, connect to new self.__connect_db_signals(db) - def _datachange_callback(self, handle_list): + def _datachange_callback(self, handle_list=None): """ When data in database changes, the map can no longer be used. As the map might be in use or might be generated at the moment,