diff --git a/static/js/introHCI.js b/static/js/introHCI.js
index a8229aa4..efbe2955 100644
--- a/static/js/introHCI.js
+++ b/static/js/introHCI.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Call this function when the page loads (the "ready" event)
 $(document).ready(function() {
 	initializePage();