diff --git a/test/integration/fixtures/simple-reporter.js b/test/integration/fixtures/simple-reporter.js
index c2b4e53cd7..d172b2ae66 100644
--- a/test/integration/fixtures/simple-reporter.js
+++ b/test/integration/fixtures/simple-reporter.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var baseReporter = require('../../../lib/reporters/base');
 module.exports = simplereporter;