diff --git a/.jshintrc b/.jshintrc
index 3ab350f54..d08a6e320 100644
--- a/.jshintrc
+++ b/.jshintrc
@@ -9,6 +9,7 @@
   "quotmark": "single",
   "trailing": true,
   "curly": true,
+  "undef": true,
 
   // Relaxing
   "boss": true,
diff --git a/src/pdf.js b/src/pdf.js
index a16d2fa0d..694891ca3 100644
--- a/src/pdf.js
+++ b/src/pdf.js
@@ -15,6 +15,7 @@
  * limitations under the License.
  */
 /*jshint globalstrict: false */
+/* globals PDFJS */
 
 // Initializing PDFJS global object (if still undefined)
 if (typeof PDFJS === 'undefined') {
diff --git a/test/unit/testreporter.js b/test/unit/testreporter.js
index d017ef5c5..98a49f5df 100644
--- a/test/unit/testreporter.js
+++ b/test/unit/testreporter.js
@@ -1,10 +1,10 @@
 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
-/*jshint globalstrict: false */
+/* globals SpecialPowers */
+
+'use strict';
 
 var TestReporter = function(browser, appPath) {
-  'use strict';
-
   function send(action, json, cb) {
     var r = new XMLHttpRequest();
     // (The POST URI is ignored atm.)