diff --git a/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp b/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp
index 54c03de049dc4a9ee43a9161bbdd70a8f2c8fc4b..a97965e4204b46164ac29ebb01be46426343a5b3 100644
--- a/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp
+++ b/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp
@@ -30,6 +30,7 @@ void Ultrasonic::onInit()
             {
                 ussDataMsg msg;
                 auto distance = getDistance();
+                std::cout << "distance: " << distance << "\n";
                 msg.distance = distance;
                 ussData.publish(msg);
             }