diff --git a/app.js b/app.js
index 07fd8021..7e45ab56 100644
--- a/app.js
+++ b/app.js
@@ -1,4 +1,5 @@
 exports.loadContext = function (callback) {
+  "use strict";
   let context = require.context('./pages', true)
   if (module.hot) {
     module.hot.accept(context.id, () => {