diff --git a/src/main.ts b/src/main.ts
index 0ebb1d9..8fc9c5d 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -22,6 +22,6 @@ export const createApp = ViteSSG(
   { routes, base: import.meta.env.BASE_URL },
   (ctx) => {
     // install all modules under `modules/`
-    Object.values(import.meta.globEager('./modules/*.ts')).map(i => i.install?.(ctx))
+    Object.values(import.meta.globEager('./modules/*.ts')).forEach(i => i.install?.(ctx))
   },
 )