diff --git a/src/nav2_turtlebot_simulator/launch/simulator.launch.py b/src/nav2_turtlebot_simulator/launch/simulator.launch.py
index 32e6caa..0cad3bc 100644
--- a/src/nav2_turtlebot_simulator/launch/simulator.launch.py
+++ b/src/nav2_turtlebot_simulator/launch/simulator.launch.py
@@ -54,6 +54,11 @@ def create_flat_house_world(gazebo_dir):
     house_model_tree = ET.parse(model_path)
     house_model = house_model_tree.getroot()
     house_model.attrib['name'] = 'turtlebot3_house_flat'
+    house_static = house_model.find('static')
+    if house_static is None:
+        house_static = ET.Element('static')
+        house_model.insert(0, house_static)
+    house_static.text = '1'
     replace_house_visual_meshes_with_boxes(house_model)
 
     for visual in house_model.findall('.//visual'):