diff --git a/utils/plugins/inline-vite-preload-script.ts b/utils/plugins/inline-vite-preload-script.ts
index 18c0a8dd1..2b9d9b703 100644
--- a/utils/plugins/inline-vite-preload-script.ts
+++ b/utils/plugins/inline-vite-preload-script.ts
@@ -23,7 +23,7 @@ export default function inlineVitePreloadScript(): PluginOption {
         }
       }
       return {
-        code: __vitePreload + code.split(`\n`).slice(1).join(`\n`),
+        code: `(function () {${__vitePreload + code.split(`\n`).slice(1).join(`\n`)}})()`,
         map: new MagicString(code).generateMap({ hires: true }),
       };
     },