diff --git a/lib/util.js b/lib/util.js
index ab3c8921d..72ac88ea2 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -1119,6 +1119,7 @@ _.parseUrl = function(url, opt) {
   opt = opt || {};
   url = Url.parse(url);
   var ssl = url.protocol === 'https:';
+  opt.protocol = opt.protocol || url.protocol;
   opt.host = opt.host || opt.hostname || ((ssl || url.protocol === 'http:') ? url.hostname : 'localhost');
   opt.port = opt.port || (url.port || (ssl ? 443 : 80));
   opt.path = opt.path || (url.pathname + (url.search ? url.search : ''));