diff --git a/README.md b/README.md
index 49e2b2d..5121d61 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 
 # ROS1 Launch 
-- roslaunch ros_web_api_bellande_step launch_api_2d.launch.py x1:=0 y1:=0 x2:=5 y2:=5 limit:=3
+- roslaunch ros_web_api_bellande_step bellande_step_api_2d_launch.launch.py x1:=0 y1:=0 x2:=5 y2:=5 limit:=3
 
 # ROS2 Launch
-- ros2 launch ros_web_api_bellande_step launch_api_2d.launch.py x1:=0 y1:=0 x2:=5 y2:=5 limit:=3
+- ros2 launch ros_web_api_bellande_step bellande_step_api_2d_launch.launch.py x1:=0 y1:=0 x2:=5 y2:=5 limit:=3