diff --git a/packages/docs-site/src/pages/s3-file-paths.mdx b/packages/docs-site/src/pages/s3-file-paths.mdx
index ec6ab9c..6879766 100644
--- a/packages/docs-site/src/pages/s3-file-paths.mdx
+++ b/packages/docs-site/src/pages/s3-file-paths.mdx
@@ -8,7 +8,7 @@ import { APIRoute } from "next-s3-upload";
 
 export default APIRoute.configure({
   key(req, filename) {
-    return `my/uploads/path/${filename.toUpperCase()}`;
+    return `my/uploads/path/${filename}`;
   }
 });
 ```