diff --git a/node/server.js b/node/server.js
index 10a95be6c..d0bd8aad9 100644
--- a/node/server.js
+++ b/node/server.js
@@ -21,6 +21,7 @@
  */
 
 var log4js = require('log4js');
+var os = require("os");
 var socketio = require('socket.io');
 var fs = require('fs');
 var settings = require('./utils/Settings');