const sd_bus_vtable bus_snapshot_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_METHOD("Remove", NULL, NULL, bus_snapshot_method_remove, 0),
- SD_BUS_PROPERTY("Cleanup", "b", bus_property_get_bool, offsetof(Snapshot, cleanup), 0),
+ SD_BUS_PROPERTY("Cleanup", "b", bus_property_get_bool, offsetof(Snapshot, cleanup), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_VTABLE_END
};