diff --git a/robot/urdf_manager.py b/robot/urdf_manager.py
index 572d8f7..3e9ad21 100644
--- a/robot/urdf_manager.py
+++ b/robot/urdf_manager.py
@@ -30,6 +30,7 @@ class UrdfManager:
         logger.info(f"Connect to {self.physics_client} by {type}")
 
     def load_models(self):
+        p.setGravity(0, 0, -9.81, physicsClientId=self.physics_client)
         p.loadURDF(
             os.path.join(self.application_path, "urdf", "plane.urdf"),
             physicsClientId=self.physics_client,
@@ -43,7 +44,6 @@ class UrdfManager:
             self.robot_start_position,
             useFixedBase=True,
         )
-        p.setGravity(0, 0, -9.81, physicsClientId=self.physics_client)
 
     def load_palletizing(self):
         pallet_position = [1.5, -1, 0.1]