diff --git a/README.md b/README.md
index a69b8a7..d38e41d 100644
--- a/README.md
+++ b/README.md
@@ -14,3 +14,7 @@ Windows Registry Editor Version 5.00
 Log file
 ========
 If anything goes wrong, look in `C:\Program Files\Gibon\wg-spool\log.txt`.
+
+Disable on specific machines
+============================
+Create a file named `C:\Program Files\Gibon\wg-spool\disabled` to disable opening of the browser window.
\ No newline at end of file