diff --git a/www/advanced-http.js b/www/advanced-http.js
index cecb2bf..67e5b1d 100644
--- a/www/advanced-http.js
+++ b/www/advanced-http.js
@@ -151,6 +151,7 @@ var http = {
         return {'Authorization': 'Basic ' + b64EncodeUnicode(username + ':' + password)};
     },
     useBasicAuth: function (username, password) {
+        this.headers['*'] = this.headers['*'] || {};
         this.headers['*'].Authorization = 'Basic ' + b64EncodeUnicode(username + ':' + password);
     },
     setHeader: function () {