diff --git a/rmf_building_map_tools/building_map/templates/gz_world.sdf b/rmf_building_map_tools/building_map/templates/gz_world.sdf
index e8e959ac..32562659 100644
--- a/rmf_building_map_tools/building_map/templates/gz_world.sdf
+++ b/rmf_building_map_tools/building_map/templates/gz_world.sdf
@@ -276,6 +276,8 @@
docked
+
+