diff --git a/README.md b/README.md
index 6a7e747..c9025ea 100644
--- a/README.md
+++ b/README.md
@@ -228,6 +228,8 @@ docker run --name webssh2 -d -p 2222:2222 -v `pwd`/app/config.json:/usr/src/conf
 
 * **accesslog** - _boolean_ - http style access logging to console.log, default: false
 
+* **safeShutdownDuration** - _integer_ - maximum delay, in seconds, given to users before the server stops when doing a safe shutdown
+
 # Experimental client-side logging
 Clicking `Start logging` on the status bar will log all data to the client. A `Download log` option will appear after starting the logging. You may download at any time to the client. You may stop logging at any time my pressing the `Logging - STOP LOG`. Note that clicking the `Start logging` option again will cause the current log to be overwritten, so be sure to download first.