diff --git a/lib/scraper.js b/lib/scraper.js
index bfc1bbfa..f40cea55 100644
--- a/lib/scraper.js
+++ b/lib/scraper.js
@@ -1,6 +1,5 @@
 var Promise = require('bluebird');
 var _ = require('lodash');
-var normalizeUrl = require('normalize-url');
 
 var logger = require('./logger');
 
@@ -12,6 +11,7 @@ var getFilenameGenerator = require('./filename-generators');
 var makeRequest = require('./request');
 var getResourceHandler = require('./file-handlers');
 var FSAdapter = require('./fs-adaper');
+var utils = require('./utils');
 
 function Scraper (options) {
 	var self = this;
@@ -52,23 +52,19 @@ Scraper.prototype.getOccupiedFileNames = function getOccupiedFileNames () {
 };
 
 Scraper.prototype.addRespondedResourcePromise = function addRespondedResourcePromise (url, promise) {
-	url = normalizeUrl(url);
-	this.respondedResourcePromises[url] = promise;
+	this.respondedResourcePromises[utils.normalizeUrl(url)] = promise;
 };
 
 Scraper.prototype.getRespondedResourcePromise = function getRespondedResourcePromise (url) {
-	url = normalizeUrl(url);
-	return this.respondedResourcePromises[url];
+	return this.respondedResourcePromises[utils.normalizeUrl(url)];
 };
 
 Scraper.prototype.addLoadedResourcePromise = function addLoadedResourcePromise (url, promise) {
-	url = normalizeUrl(url);
-	this.loadedResourcePromises[url] = promise;
+	this.loadedResourcePromises[utils.normalizeUrl(url)] = promise;
 };
 
 Scraper.prototype.getLoadedResourcePromise = function getLoadedResourcePromise (url) {
-	url = normalizeUrl(url);
-	return this.loadedResourcePromises[url];
+	return this.loadedResourcePromises[utils.normalizeUrl(url)];
 };
 
 Scraper.prototype.getHtmlSources = function getHtmlSources () {
@@ -123,7 +119,7 @@ Scraper.prototype.requestResource = function requestResource (resource) {
 		}).then(function requestCompleted (responseData) {
 			logger.debug('received response for ' + url);
 
-			if (responseData.url !== url) { // Url may be changed in redirects
+			if (!utils.urlsEqual(responseData.url, url)) { // Url may be changed in redirects
 				logger.debug('url changed. old url = ' + url + ', new ulr = ' + responseData.url);
 				resource.setUrl(responseData.url);
 				self.addRespondedResourcePromise(responseData.url, respondedResourcePromise);
diff --git a/lib/utils.js b/lib/utils.js
index 84099c7f..d9800de5 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,6 +1,7 @@
 var url = require('url');
 var path = require('path');
 var Promise = require('bluebird');
+var normalizeUrl = require('normalize-url');
 
 var logger = require('./logger');
 
@@ -74,6 +75,10 @@ function waitAllFulfilled (promises) {
 	}));
 }
 
+function urlsEqual (url1, url2) {
+	return normalizeUrl(url1) === normalizeUrl(url2);
+}
+
 module.exports = {
 	isUrl: isUrl,
 	getUrl: getUrl,
@@ -84,5 +89,7 @@ module.exports = {
 	getFilenameExtension: getFilenameExtension,
 	getHashFromUrl: getHashFromUrl,
 	shortenFilename: shortenFilename,
-	waitAllFulfilled: waitAllFulfilled
+	waitAllFulfilled: waitAllFulfilled,
+	normalizeUrl: normalizeUrl,
+	urlsEqual: urlsEqual
 };