diff --git a/pps_ws/src/d_fall_pps/launch/Config.sh b/pps_ws/src/d_fall_pps/launch/Config.sh
index 0f61a49902b9aaa50b9ca15229bd50d4398e4203..a2676771780fb38140016b65cfa60367981c1bfe 100755
--- a/pps_ws/src/d_fall_pps/launch/Config.sh
+++ b/pps_ws/src/d_fall_pps/launch/Config.sh
@@ -1,5 +1,5 @@
 export ROS_MASTER_URI=http://teacher:11311
-export ROS_IP=10.42.0.33
+export ROS_IP=hostname -I | awk '{print $1;}'
 export ROS_HOSTNAME=student$(cat /etc/StudentID)
 export ROS_NAMESPACE=$(cat /etc/StudentID)