diff --git a/Dockerfile b/Dockerfile
index a8780bb..e37c0bd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,7 +32,7 @@ COPY --from=rust-build /usr/local/cargo/bin/iching /usr/local/bin/iching
 
 ### NEW ###
 RUN find dist/backend -name "*.js" -exec bash -c 'mv "$0" "${0%.js}.mjs"' {} \;
-RUN find dist/frontend -name "*.js" -exec bash -c 'mv "$0" "${0%.js}.cjs"' {} \;
+RUN find dist/frontend -name "*.js" -exec bash -c 'mv "$0" "${0%.js}.mjs"' {} \;
 
 #RUN mkdir -p dist/iching
 #RUN cp dist/*.js dist/iching/
diff --git a/frontend/index.html b/frontend/index.html
index 0f9c28b..0bc46b0 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -1,12 +1,12 @@
 <!DOCTYPE html>
 <html lang="de">
-<head>
-  <meta charset="UTF-8">
-  <title>Button mit TypeScript</title>
-</head>
-<body>
-  <h1>Mein Button</h1>
-  <button id="myButton">Klick mich!</button>
-  <script type="module" src="./event.cjs"></script>
-</body>
+  <head>
+    <meta charset="UTF-8">
+    <title>Button mit TypeScript</title>
+  </head>
+  <body>
+    <h1>Mein Button</h1>
+    <button id="myButton">Klick mich!</button>
+    <script type="module" src="./event.mjs"></script>
+  </body>
 </html>
\ No newline at end of file
