diff --git a/theme/index.d.ts b/theme/index.d.ts
index 6f19e1405..7bea6de3e 100644
--- a/theme/index.d.ts
+++ b/theme/index.d.ts
@@ -1,3 +1,3 @@
 import { NuxtConfig } from '@nuxt/types'
 
-export default (_config: NuxtConfig) => NuxtConfig
+export declare const withDocus: (_config: NuxtConfig) => NuxtConfig