diff --git a/lib/url.js b/lib/url.js
index 03a9fb03dfcca7..75f4967ad2b6d3 100644
--- a/lib/url.js
+++ b/lib/url.js
@@ -42,6 +42,7 @@ function Url() {
 // compiled once on the first module load.
 const protocolPattern = /^([a-z0-9.+-]+:)/i;
 const portPattern = /:[0-9]*$/;
+const hostPattern = /^\/\/[^@/]+@[^@/]+/;
 
 // Special case for a simple path URL
 const simplePathPattern = /^(\/\/?(?!\/)[^?\s]*)(\?[^\s]*)?$/;
@@ -204,7 +205,7 @@ Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
   // user@server is *always* interpreted as a hostname, and url
   // resolution will treat //foo/bar as host=foo,path=bar because that's
   // how the browser resolves relative URLs.
-  if (slashesDenoteHost || proto || /^\/\/[^@/]+@[^@/]+/.test(rest)) {
+  if (slashesDenoteHost || proto || hostPattern.test(rest)) {
     var slashes = rest.charCodeAt(0) === 47/*/*/ &&
                   rest.charCodeAt(1) === 47/*/*/;
     if (slashes && !(proto && hostlessProtocol[proto])) {