diff --git a/lib/modules/webserver/server.js b/lib/modules/webserver/server.js
index e5ae3a515..289cea9ca 100644
--- a/lib/modules/webserver/server.js
+++ b/lib/modules/webserver/server.js
@@ -9,6 +9,7 @@ var express = require('express');
 let path = require('path');
 var expressWebSocket = require('express-ws');
 var bodyParser = require('body-parser');
+var fs = require('../../core/fs.js');
 
 class Server {
   constructor(options) {