diff --git a/index.js b/index.js
index <HASH>..<HASH> 100644
--- a/index.js
+++ b/index.js
@@ -352,6 +352,7 @@ SSDP.prototype.stop = function () {
   this.advertise(false)

   this.advertise(false)

   this.sock.close()

+  this.sock = null;

 }
Null socket when stopping the service.

Fixes #8.