diff --git a/README.md b/README.md
index 9d340f8..7a2cb53 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,8 @@ I suggest you to check these points befaure using Gissmo Launcher:
   * tput command (try ```which tput``` to know if you have it)
   * a default configuration file to give Gissmo Launcher some data
 
+**Note**: This script was done on Ubuntu. If you use another operating system, some commands will not work. For an example `launch.sh init`.
+
 ## Configuration file
 
 A configuration example is available here: [config.example](./config.example).