diff --git a/crates/tuono/src/source_builder.rs b/crates/tuono/src/source_builder.rs
index 9091379b..c78ac4e6 100644
--- a/crates/tuono/src/source_builder.rs
+++ b/crates/tuono/src/source_builder.rs
@@ -9,7 +9,7 @@ use std::path::Path;
 use std::path::PathBuf;
 
 pub const SERVER_ENTRY_DATA: &str = "// File automatically generated by tuono
-
+// Do not manually update this file
 import { routeTree } from './routeTree.gen'
 import { serverSideRendering } from 'tuono/ssr'
 
@@ -17,7 +17,8 @@ export const renderFn = serverSideRendering(routeTree)
 ";
 
 pub const CLIENT_ENTRY_DATA: &str = "// File automatically generated by tuono
-
+// Do not manually update this file
+import 'vite/modulepreload-polyfill'
 import { hydrate } from 'tuono/hydration'
 import '../src/styles/global.css'
 
diff --git a/packages/tuono/src/hydration/index.tsx b/packages/tuono/src/hydration/index.tsx
index d6737fcd..55b6baa8 100644
--- a/packages/tuono/src/hydration/index.tsx
+++ b/packages/tuono/src/hydration/index.tsx
@@ -1,4 +1,3 @@
-import 'vite/modulepreload-polyfill'
 import React from 'react'
 import ReactDOM from 'react-dom/client'
 import { RouterProvider, createRouter } from '../router'