diff --git a/lib/main.js b/lib/main.js
index b4dd326..4102195 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -4,7 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 (function(){
 	"use strict";
-	require("./stylePreferencePane.js");
+	require("./stylePreferencePane");
 	
 	var self = require("sdk/self");
 	var pageMod = require("sdk/page-mod");
@@ -16,7 +16,7 @@
 	var _ = require("sdk/l10n").get;
 	var tabUtils = require("sdk/tabs/utils");
 
-	var sharedFunctions = require("./sharedFunctions.js");
+	var sharedFunctions = require("./sharedFunctions");
 	var getDomainRegExpList = sharedFunctions.getDomainRegExpList;
 	// preferences
 	Object.keys(prefs).forEach(function(pref){