diff --git a/bower.json b/bower.json
index dcf765bfe..0767495c0 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.0.1191",
+  "version": "1.0.1193",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index fde32a956..ecc03e8de 100644
--- a/build/pdf.combined.js
+++ b/build/pdf.combined.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.0.1191';
-PDFJS.build = 'c2dc665';
+PDFJS.version = '1.0.1193';
+PDFJS.build = 'da258f8';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/build/pdf.js b/build/pdf.js
index 16b83b814..c31c49754 100644
--- a/build/pdf.js
+++ b/build/pdf.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.0.1191';
-PDFJS.build = 'c2dc665';
+PDFJS.version = '1.0.1193';
+PDFJS.build = 'da258f8';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index aaf868334..157704058 100644
--- a/build/pdf.worker.js
+++ b/build/pdf.worker.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.0.1191';
-PDFJS.build = 'c2dc665';
+PDFJS.version = '1.0.1193';
+PDFJS.build = 'da258f8';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/package.json b/package.json
index c049103a4..d12e6a62a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.0.1191",
+  "version": "1.0.1193",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",
diff --git a/web/compatibility.js b/web/compatibility.js
index 967e312a9..424d5af32 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -447,20 +447,10 @@ if (typeof PDFJS === 'undefined') {
 
 // Checks if navigator.language is supported
 (function checkNavigatorLanguage() {
-  if ('language' in navigator &&
-      /^[a-z]+(-[A-Z]+)?$/.test(navigator.language)) {
+  if ('language' in navigator) {
     return;
   }
-  function formatLocale(locale) {
-    var split = locale.split(/[-_]/);
-    split[0] = split[0].toLowerCase();
-    if (split.length > 1) {
-      split[1] = split[1].toUpperCase();
-    }
-    return split.join('-');
-  }
-  var language = navigator.language || navigator.userLanguage || 'en-US';
-  PDFJS.locale = formatLocale(language);
+  PDFJS.locale = navigator.userLanguage || 'en-US';
 })();
 
 (function checkRangeRequests() {