diff --git a/Gruntfile.js b/Gruntfile.js
index 4ba85017..43bd2c8a 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -323,7 +323,7 @@ module.exports = function (grunt) {
   ciTasks.push('connect:tests');
 
   // Can't run Sauce Labs tests in pull requests
-  if (process.env.TRAVIS_PULL_REQUEST == null) {
+  if (process.env.TRAVIS_PULL_REQUEST == 'false') {
     ciTasks.push('saucelabs-qunit');
   }