diff --git a/src/tests/backend/specs/specialpages.js b/src/tests/backend/specs/specialpages.js
index 8b372c959..fa2260708 100644
--- a/src/tests/backend/specs/specialpages.js
+++ b/src/tests/backend/specs/specialpages.js
@@ -1,3 +1,5 @@
+'use strict';
+
 const common = require('../common');
 const settings = require('../../../node/utils/Settings');