diff --git a/res/puzzle.html b/res/puzzle.html
index 2401304..3f0bb75 100644
--- a/res/puzzle.html
+++ b/res/puzzle.html
@@ -6,6 +6,7 @@
     <meta name="viewport" content="width=device-width">
     <link rel="icon" href="images/luna-moth.svg" type="image/svg+xml">
     <link rel="icon" href="images/luna-moth.png" type="image/png">
+    <script src="res/concat.js"></script>
     <script>
 function init() {
   let params = new URLSearchParams(window.location.search);