diff --git a/packages/nuxt-webpack-optimisations/build.config.ts b/packages/nuxt-webpack-optimisations/build.config.ts
index 71701e2..a8003ed 100644
--- a/packages/nuxt-webpack-optimisations/build.config.ts
+++ b/packages/nuxt-webpack-optimisations/build.config.ts
@@ -2,7 +2,9 @@ import { defineBuildConfig } from 'unbuild'
 
 export default defineBuildConfig({
   declaration: true,
-  emitCJS: false,
+  rollup: {
+    emitCJS: false,
+  },
   entries: [
     'src/module',
   ],
diff --git a/packages/nuxt-webpack-optimisations/src/module.ts b/packages/nuxt-webpack-optimisations/src/module.ts
index 4c66dbb..37de3f5 100644
--- a/packages/nuxt-webpack-optimisations/src/module.ts
+++ b/packages/nuxt-webpack-optimisations/src/module.ts
@@ -27,6 +27,11 @@ export default defineNuxtModule<NuxtWebpackOptimisationOptions>({
     version,
     configKey: NUXT_CONFIG_KEY,
   },
+  // support @nuxt/kit legacy
+  // @ts-ignore
+  configKey: CONFIG_KEY,
+  // @ts-ignore
+  name: NAME,
   defaults: defaultOptions,
   async setup(webpackOptimisationOptions: NuxtWebpackOptimisationOptions, nuxt) {
     const logger = consola.withScope(NAME)