diff --git a/doc/local_ros_installation.md b/doc/local_ros_installation.md
index aeefee37c2a24c7865e7acf596a552b4aece6852..5f9a009308e8af76afbf76a914acf47d7c7675f0 100644
--- a/doc/local_ros_installation.md
+++ b/doc/local_ros_installation.md
@@ -203,9 +203,13 @@ Geneneral, uses the location given to config. Currently only Gränsö ortho phot
 ```bash
 wexec roslaunch lrs_launch rviz_outside.launch
 ```
+
 #### Ubuntu 20.04 with ROS Melodic
 
-TO BE WRITTEN
+Geneneral, uses the location given to config. Currently only Gränsö ortho photo installed.
+```bash
+wexec roslaunch lrs_launch rviz_outside.launch
+```
 
 ### Test the dji0