diff --git a/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp b/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp
index 615c0566ed1d81a9be4b482bd1b838702ef73122..141988c92d29c7aa756b33f64f19cc80d5eb773c 100644
--- a/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp
+++ b/modules/catkin_ws/src/car/src/ultrasonic/Ultrasonic.cpp
@@ -10,10 +10,10 @@ PLUGINLIB_EXPORT_CLASS(car::Ultrasonic, nodelet::Nodelet
 
 namespace car
 {
-Ultrasonic::Ultrasonic(ros::NodeHandle & nh, std::string & name) : USS_SRF02(0x76), nh_(nh), name_(name)
+Ultrasonic::Ultrasonic(ros::NodeHandle & nh, std::string & name) : USS_SRF02(0x74), nh_(nh), name_(name)
 {}
 
-Ultrasonic::Ultrasonic()  : USS_SRF02(0x76)
+Ultrasonic::Ultrasonic()  : USS_SRF02(0x74)
 {}
 
 Ultrasonic::~Ultrasonic()