diff --git a/index.html b/index.html
index 8c9b6e0..181f62b 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,7 @@
   </head>
   <body>
     <script type="module">
-      import init from './double-pendulum.js';
+      import init from './double_pendulum_wasm.js';
 
       async function run() {
         await init();
