diff --git a/lib/less/browser.js b/lib/less/browser.js
index 92b9bb15..6cc8c6d7 100644
--- a/lib/less/browser.js
+++ b/lib/less/browser.js
@@ -200,7 +200,7 @@ function extractUrlParts(url, baseUrl) {
     // urlParts[4] = filename
     // urlParts[5] = parameters
 
-    var urlPartsRegex = /^((?:[a-z-]+:)?\/\/(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/,
+    var urlPartsRegex = /^((?:[a-z-]+:)?\/+(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/,
         urlParts = url.match(urlPartsRegex),
         returner = {}, directories = [], i, baseUrlParts;
 
@@ -313,7 +313,7 @@ function loadStyleSheet(sheet, callback, reload, remaining) {
 }
 
 function extractId(href) {
-    return href.replace(/^[a-z]+:\/\/?[^\/]+/, '' )  // Remove protocol & domain
+    return href.replace(/^[a-z-]+:\/+?[^\/]+/, '' )  // Remove protocol & domain
                .replace(/^\//,                 '' )  // Remove root /
                .replace(/\.[a-zA-Z]+$/,        '' )  // Remove simple extension
                .replace(/[^\.\w-]+/g,          '-')  // Replace illegal characters