diff --git a/metadrive/component/sensors/base_camera.py b/metadrive/component/sensors/base_camera.py
index 027344a55..752573926 100644
--- a/metadrive/component/sensors/base_camera.py
+++ b/metadrive/component/sensors/base_camera.py
@@ -159,7 +159,7 @@ def perceive(
             if position is None:
                 position = constants.DEFAULT_SENSOR_OFFSET
             if hpr is None:
-                position = constants.DEFAULT_SENSOR_HPR
+                hpr = constants.DEFAULT_SENSOR_HPR
 
             # return camera to original state
             original_object = self.cam.getParent()