diff --git a/gdbus/object.c b/gdbus/object.c
index 7b0476f..54e04b9 100644
--- a/gdbus/object.c
+++ b/gdbus/object.c
@@ -810,6 +810,9 @@ static struct generic_data *invalidate_parent_data(DBusConnection *conn,
 	if (child == NULL || g_slist_find(data->objects, child) != NULL)
 		goto done;
 
+	if (!g_slist_find(parent->objects, child))
+		goto done;
+
 	data->objects = g_slist_prepend(data->objects, child);
 	child->parent = data;