diff --git a/xmlout.js b/xmlout.js
index 481f355..6fd981a 100644
--- a/xmlout.js
+++ b/xmlout.js
@@ -1,3 +1,4 @@
+var http = require('http');
 var xmlrpc = require('xmlrpc');
 var url = require('url');
 var math = require('mathjs');