diff --git a/lib/XMLHttpRequest.js b/lib/XMLHttpRequest.js
index 4b7cab4..665d47d 100644
--- a/lib/XMLHttpRequest.js
+++ b/lib/XMLHttpRequest.js
@@ -22,6 +22,7 @@ exports.XMLHttpRequest = function() {
   var self = this;
   var http = require('http');
   var https = require('https');
+  var withCredentials = true;
 
   // Holds http.js objects
   var request;
@@ -505,6 +506,11 @@ exports.XMLHttpRequest = function() {
     }
   };
 
+  this.withCredentials = function(state) {
+    withCredentials = state;
+    return withCredentials;
+  };
+
   /**
    * Called when an error is encountered to deal with it.
    */
diff --git a/tests/test-request-methods.js b/tests/test-request-methods.js
index fa1b1be..15c2b03 100644
--- a/tests/test-request-methods.js
+++ b/tests/test-request-methods.js
@@ -36,6 +36,9 @@ function start(method) {
   // Reset each time
   xhr = new XMLHttpRequest();
 
+  var withCreds = xhr.withCredentials(false);
+  assert.equal(false, withCreds);
+
   xhr.onreadystatechange = function() {
     if (this.readyState == 4) {
       if (method == "HEAD") {