diff --git a/README.md b/README.md
index 490bafc83..a14936c96 100644
--- a/README.md
+++ b/README.md
@@ -42,11 +42,11 @@ The Chromium extension is still somewhat experimental but it can be installed tw
 ways:
 
 + [Unofficial Version](https://chrome.google.com/webstore/detail/pdf-viewer/oemmndcbldboiebfnladdacbdfmadadm) - *This extension is maintained by a PDF.js contributor.*
-+ Build Your Own - Get the code as explained below and issue `node make extension`. Then open
++ Build Your Own - Get the code as explained below and issue `node make chromium`. Then open
 Chrome, go to `Tools > Extension` and load the (unpackaged) extension from the
-directory `build/chrome`.
+directory `build/chromium`.
 
-The version of the extension for the Opera browser can be found at the [Opera add-ons](https://addons.opera.com/en/extensions/details/pdf-viewer/).
+The version of the extension for the Opera browser can be found at the [Opera add-ons catalog](https://addons.opera.com/en/extensions/details/pdf-viewer/).
 
 ## Getting the Code
 
diff --git a/extensions/chrome/.gitignore b/extensions/chromium/.gitignore
similarity index 100%
rename from extensions/chrome/.gitignore
rename to extensions/chromium/.gitignore
diff --git a/extensions/chrome/hide-xhtml-error.css b/extensions/chromium/hide-xhtml-error.css
similarity index 100%
rename from extensions/chrome/hide-xhtml-error.css
rename to extensions/chromium/hide-xhtml-error.css
diff --git a/extensions/chrome/icon128.png b/extensions/chromium/icon128.png
similarity index 100%
rename from extensions/chrome/icon128.png
rename to extensions/chromium/icon128.png
diff --git a/extensions/chrome/icon16.png b/extensions/chromium/icon16.png
similarity index 100%
rename from extensions/chrome/icon16.png
rename to extensions/chromium/icon16.png
diff --git a/extensions/chrome/icon48.png b/extensions/chromium/icon48.png
similarity index 100%
rename from extensions/chrome/icon48.png
rename to extensions/chromium/icon48.png
diff --git a/extensions/chrome/insertviewer.js b/extensions/chromium/insertviewer.js
similarity index 100%
rename from extensions/chrome/insertviewer.js
rename to extensions/chromium/insertviewer.js
diff --git a/extensions/chrome/manifest.json b/extensions/chromium/manifest.json
similarity index 88%
rename from extensions/chrome/manifest.json
rename to extensions/chromium/manifest.json
index e36274708..83acfc501 100644
--- a/extensions/chrome/manifest.json
+++ b/extensions/chromium/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 2,
   "name": "PDF Viewer",
   "version": "PDFJSSCRIPT_VERSION",
-  "description": "Uses HTML5 to display PDF files directly in Chrome.",
+  "description": "Uses HTML5 to display PDF files directly in the browser.",
   "icons": {
     "128": "icon128.png",
     "48": "icon48.png",
diff --git a/extensions/chrome/patch-worker.js b/extensions/chromium/patch-worker.js
similarity index 100%
rename from extensions/chrome/patch-worker.js
rename to extensions/chromium/patch-worker.js
diff --git a/extensions/chrome/pdfHandler-local.js b/extensions/chromium/pdfHandler-local.js
similarity index 100%
rename from extensions/chrome/pdfHandler-local.js
rename to extensions/chromium/pdfHandler-local.js
diff --git a/extensions/chrome/pdfHandler.html b/extensions/chromium/pdfHandler.html
similarity index 100%
rename from extensions/chrome/pdfHandler.html
rename to extensions/chromium/pdfHandler.html
diff --git a/extensions/chrome/pdfHandler.js b/extensions/chromium/pdfHandler.js
similarity index 100%
rename from extensions/chrome/pdfHandler.js
rename to extensions/chromium/pdfHandler.js
diff --git a/make.js b/make.js
index 50a4295d1..23e81e8d6 100644
--- a/make.js
+++ b/make.js
@@ -32,7 +32,7 @@ var ROOT_DIR = __dirname + '/', // absolute path to project's root
     BUILD_WORKER_TARGET = BUILD_DIR + 'pdf.worker.js',
     BUILD_TARGETS = [BUILD_TARGET, BUILD_WORKER_TARGET],
     FIREFOX_BUILD_DIR = BUILD_DIR + '/firefox/',
-    CHROME_BUILD_DIR = BUILD_DIR + '/chrome/',
+    CHROME_BUILD_DIR = BUILD_DIR + '/chromium/',
     EXTENSION_SRC_DIR = 'extensions/',
     LOCALE_SRC_DIR = 'l10n/',
     GH_PAGES_DIR = BUILD_DIR + 'gh-pages/',
@@ -144,7 +144,7 @@ target.web = function() {
   cp(FIREFOX_BUILD_DIR + '/*.xpi', FIREFOX_BUILD_DIR + '/*.rdf',
      GH_PAGES_DIR + EXTENSION_SRC_DIR + 'firefox/');
   cp(CHROME_BUILD_DIR + '/*.crx', FIREFOX_BUILD_DIR + '/*.rdf',
-     GH_PAGES_DIR + EXTENSION_SRC_DIR + 'chrome/');
+     GH_PAGES_DIR + EXTENSION_SRC_DIR + 'chromium/');
   cp('web/index.html.template', GH_PAGES_DIR + '/index.html');
   cp('-R', 'test/features', GH_PAGES_DIR);
 
@@ -353,7 +353,7 @@ target.extension = function() {
 
   target.locale();
   target.firefox();
-  target.chrome();
+  target.chromium();
 };
 
 target.buildnumber = function() {
@@ -635,13 +635,13 @@ target.b2g = function() {
 //
 // make chrome
 //
-target.chrome = function() {
+target.chromium = function() {
   cd(ROOT_DIR);
   echo();
-  echo('### Building Chrome extension');
+  echo('### Building Chromium extension');
   var defines = builder.merge(DEFINES, {CHROME: true});
 
-  var CHROME_BUILD_DIR = BUILD_DIR + '/chrome/',
+  var CHROME_BUILD_DIR = BUILD_DIR + '/chromium/',
       CHROME_BUILD_CONTENT_DIR = CHROME_BUILD_DIR + '/content/';
 
   target.bundle({ defines: defines });
@@ -657,11 +657,11 @@ target.chrome = function() {
     defines: defines,
     copy: [
       [COMMON_WEB_FILES, CHROME_BUILD_CONTENT_DIR + '/web'],
-      [['extensions/chrome/*.json',
-        'extensions/chrome/*.html',
-        'extensions/chrome/*.js',
-        'extensions/chrome/*.css',
-        'extensions/chrome/icon*.png',],
+      [['extensions/chromium/*.json',
+        'extensions/chromium/*.html',
+        'extensions/chromium/*.js',
+        'extensions/chromium/*.css',
+        'extensions/chromium/icon*.png',],
        CHROME_BUILD_DIR],
       ['external/webL10n/l10n.js', CHROME_BUILD_CONTENT_DIR + '/web'],
       ['web/viewer.css', CHROME_BUILD_CONTENT_DIR + '/web'],
@@ -1073,7 +1073,7 @@ target.lint = function() {
                     'test/reporter.js',
                     'test/unit/',
                     'extensions/firefox/',
-                    'extensions/chrome/'
+                    'extensions/chromium/'
                     ];
 
   var jshintPath = path.normalize('./node_modules/.bin/jshint');