diff --git a/start-khanat-client.sh b/start-khanat-client.sh
index 3ddbf28..f51e021 100755
--- a/start-khanat-client.sh
+++ b/start-khanat-client.sh
@@ -97,6 +97,8 @@ $(basename $0) [Option] : Donwload Launch Godot
      -h : Show help
      -d : Show debug message
      -e : Start Godot in editor mode
+     -o <File> : target godot file (downloaded)
+     -s <Url> : Url to download a specific godot version
 EOF
   exit 1
 fi