diff --git a/lib/less/browser.js b/lib/less/browser.js
index b042dc97..d87380c6 100644
--- a/lib/less/browser.js
+++ b/lib/less/browser.js
@@ -4,6 +4,7 @@
 
 var isFileProtocol = (location.protocol === 'file:'    ||
                       location.protocol === 'chrome:'  ||
+                      location.protocol === 'chrome-extension:'  ||
                       location.protocol === 'resource:');
 
 less.env = less.env || (location.hostname == '127.0.0.1' ||