diff --git a/linear_feedback_controller_msgs_py/numpy_conversions.py b/linear_feedback_controller_msgs_py/numpy_conversions.py
index fa67348..0b71b93 100644
--- a/linear_feedback_controller_msgs_py/numpy_conversions.py
+++ b/linear_feedback_controller_msgs_py/numpy_conversions.py
@@ -212,6 +212,8 @@ def matrix_msg_to_numpy(
 
     Args:
         msg (std_msgs.msg.Float64MultiArray): Input ROS message with array.
+        return_vector (bool, optional): If ``True`` vector is returned in a shape (N,)
+        otherwise the shape is (N,1). Defaults to True.
 
     Returns:
         npt.NDArray[np.float64]: Output numpy matrix.