diff --git a/lib/net.js b/lib/net.js
index 685c64b326d..5a480a35b57 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -1167,12 +1167,13 @@ Server.prototype.listen = function () {
   }
 };
 
-Server.prototype.listenFD = function (fd) {
+Server.prototype.listenFD = function (fd, type) {
   if (this.fd) {
     throw new Error('Server already opened');
   }
 
   this.fd = fd;
+  this.type = type || null;
   this._startWatcher();
 };