diff --git a/axis-ptz-controller/axis_ptz_controller.py b/axis-ptz-controller/axis_ptz_controller.py
index f2cd26c..6b688c7 100644
--- a/axis-ptz-controller/axis_ptz_controller.py
+++ b/axis-ptz-controller/axis_ptz_controller.py
@@ -673,7 +673,7 @@ def _track_object(self, time_since_last_update: float) -> None:
                 math.sin(math.radians(self.object.tau)),
             ]
         )
-        r_XYZ_a_t = np.matmul(self.camera.get_xyz_to_enz_transformation_matrix.transpose(), r_ENz_a_t)
+        r_XYZ_a_t = np.matmul(self.camera.get_xyz_to_enz_transformation_matrix().transpose(), r_ENz_a_t)
         r_uvw_a_t = np.matmul(self.camera.get_xyz_to_uvw_transformation_matrix, r_XYZ_a_t)
 
         # Compute pan an tilt