diff --git a/lib/utils/index.js b/lib/utils/index.js
index f3cb366c..8c7015c5 100644
--- a/lib/utils/index.js
+++ b/lib/utils/index.js
@@ -19,9 +19,9 @@ function isUrl (path) {
 }
 
 function getUrl (currentUrl, path) {
-	var pathObject = url.parse(path);
+	const pathObject = url.parse(path);
 	if (isUrl(path) && !pathObject.protocol) {
-		var urlObject = url.parse(currentUrl);
+		const urlObject = url.parse(currentUrl);
 		pathObject.protocol = urlObject.protocol;
 		path = url.format(pathObject);
 	}
@@ -33,8 +33,8 @@ function getUnixPath (filepath) {
 }
 
 function getRelativePath (path1, path2) {
-	var dirname = path.dirname(path1);
-	var relativePath = path.relative(dirname, path2);
+	const dirname = path.dirname(path1);
+	const relativePath = path.relative(dirname, path2);
 	return getUnixPath(relativePath);
 }
 
@@ -45,8 +45,12 @@ function getRelativePath (path1, path2) {
  * @returns {string} decoded pathname
  */
 function getPathnameFromUrl (u) {
-	var pathname = url.parse(u).pathname;
-	return decodeURI(pathname);
+	const pathname = url.parse(u).pathname;
+	try {
+		return decodeURI(pathname);
+	} catch (e) {
+		return pathname;
+	}
 }
 
 /**
@@ -96,8 +100,8 @@ function getFilenameExtension (filepath) {
 
 function shortenFilename (filename) {
 	if (filename.length >= MAX_FILENAME_LENGTH) {
-		var shortFilename = filename.substring(0, 20) + getFilenameExtension(filename);
-		logger.debug('shorten filename: ' + filename + ' -> ' + shortFilename);
+		const shortFilename = filename.substring(0, 20) + getFilenameExtension(filename);
+		logger.debug(`[utils] shorten filename: ${filename} -> ${shortFilename}`);
 		return shortFilename;
 	}
 	return filename;
@@ -110,7 +114,11 @@ function waitAllFulfilled (promises) {
 }
 
 function normalizeUrl (u, opts) {
-	return normalize(u, extend({removeTrailingSlash: false}, opts));
+	try {
+		return normalize(u, extend({removeTrailingSlash: false}, opts));
+	} catch (e) {
+		return u;
+	}
 }
 
 function urlsEqual (url1, url2) {
@@ -118,7 +126,7 @@ function urlsEqual (url1, url2) {
 }
 
 function isUriSchemaSupported (path) {
-	var protocol = url.parse(path).protocol;
+	const protocol = url.parse(path).protocol;
 	return !protocol || protocol && isUrl(path);
 }
 
@@ -127,7 +135,7 @@ function getTypeByMime (mimeType) {
 }
 
 function getTypeByFilename (filename) {
-	var ext = getFilenameExtension(filename);
+	const ext = getFilenameExtension(filename);
 	return typeByExt[ext];
 }
 
diff --git a/test/unit/utils/utils-test.js b/test/unit/utils/utils-test.js
index d5c40520..6a49c964 100644
--- a/test/unit/utils/utils-test.js
+++ b/test/unit/utils/utils-test.js
@@ -91,6 +91,9 @@ describe('Utils', function () {
 		it('should decode escaped chars', function () {
 			utils.getFilepathFromUrl('https://example.co/logo/logo-mobile%20(1).svg?q=650').should.equal('logo/logo-mobile (1).svg');
 		});
+		it('should return path as is if url is malformed', () => {
+			utils.getFilepathFromUrl('https://example.co/%%IMAGE%%/logo.png').should.equal('%%IMAGE%%/logo.png');
+		});
 	});
 
 	describe('#getHashFromUrl', function () {
@@ -225,5 +228,12 @@ describe('Utils', function () {
 		it('should return false for /path and /path/', function() {
 			should(utils.urlsEqual('http://example.com/path', 'http://example.com/path/')).be.eql(false);
 		});
-	})
+	});
+
+	describe('#normalizeUrl', () => {
+		it('should return original url if it is malformed', () => {
+			const malformedUrl = 'http://example.com/%%IMAGEURL%%/bar1q2blitz.png';
+			should(utils.normalizeUrl(malformedUrl)).be.eql(malformedUrl);
+		});
+	});
 });