diff --git a/web/app.js b/web/app.js
index da44cd7d1..900a89129 100644
--- a/web/app.js
+++ b/web/app.js
@@ -353,7 +353,9 @@ let PDFViewerApplication = {
    * @private
    */
   _initializeL10n() {
-    this.l10n = this.externalServices.createL10n();
+    this.l10n = this.externalServices.createL10n({
+      locale: PDFJS.locale,
+    });
     return this.l10n.getDirection().then((dir) => {
       document.getElementsByTagName('html')[0].dir = dir;
     });
diff --git a/web/chromecom.js b/web/chromecom.js
index 9afeab538..533361467 100644
--- a/web/chromecom.js
+++ b/web/chromecom.js
@@ -342,7 +342,7 @@ ChromeExternalServices.createDownloadManager = function() {
 ChromeExternalServices.createPreferences = function() {
   return new ChromePreferences();
 };
-ChromeExternalServices.createL10n = function() {
+ChromeExternalServices.createL10n = function(options) {
   return new GenericL10n(navigator.language);
 };
 PDFViewerApplication.externalServices = ChromeExternalServices;
diff --git a/web/firefoxcom.js b/web/firefoxcom.js
index 9853867b7..c5cb40640 100644
--- a/web/firefoxcom.js
+++ b/web/firefoxcom.js
@@ -264,7 +264,7 @@ PDFViewerApplication.externalServices = {
     return new FirefoxPreferences();
   },
 
-  createL10n() {
+  createL10n(options) {
     let mozL10n = document.mozL10n;
     // TODO refactor mozL10n.setExternalLocalizerServices
     return new MozL10n(mozL10n);
diff --git a/web/genericcom.js b/web/genericcom.js
index 29d131c5b..36412a809 100644
--- a/web/genericcom.js
+++ b/web/genericcom.js
@@ -17,7 +17,6 @@ import { DefaultExternalServices, PDFViewerApplication } from './app';
 import { BasePreferences } from './preferences';
 import { DownloadManager } from './download_manager';
 import { GenericL10n } from './genericl10n';
-import { PDFJS } from 'pdfjs-lib';
 
 if (typeof PDFJSDev !== 'undefined' && !PDFJSDev.test('GENERIC')) {
   throw new Error('Module "pdfjs-web/genericcom" shall not be used outside ' +
@@ -49,8 +48,8 @@ GenericExternalServices.createDownloadManager = function() {
 GenericExternalServices.createPreferences = function() {
   return new GenericPreferences();
 };
-GenericExternalServices.createL10n = function () {
-  return new GenericL10n(PDFJS.locale);
+GenericExternalServices.createL10n = function(options) {
+  return new GenericL10n(options.locale);
 };
 PDFViewerApplication.externalServices = GenericExternalServices;