diff --git a/README.md b/README.md
index da73b64..b265a8a 100644
--- a/README.md
+++ b/README.md
@@ -94,8 +94,12 @@ Edit the following lines if you want to customize the actions performed when pre
 ```
 shell_cmd = "./scripts/toggle_antenna.sh"
 serial_cmd = "hrtu1"
+serial_cmd_msg = "Tune"
 ```
 
+_serial_cmd_msg_ is a message that will be displayed on the screen after executing the _serial_cmd_.
+
+
 # Execution
 
 Executing this script will spawn a web server running on port 5000. This is not meant for production use and/or public exposure. Anyone able to access this server via the network can alter any settings on your HR50.