diff --git a/lib/util.js b/lib/util.js
index 4b8e488..87db7e7 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -720,6 +720,7 @@ _.parseUrl = function(url, opt){
     opt = opt || {};
     url = Url.parse(url);
     var ssl = url.protocol === 'https:';
+    opt.protocol = url.protocol;
     opt.host = opt.host
         || opt.hostname
         || ((ssl || url.protocol === 'http:') ? url.hostname : 'localhost');