diff --git a/examples/mako/package.json b/examples/mako/package.json
index 9ed166a8..90ba4c3b 100644
--- a/examples/mako/package.json
+++ b/examples/mako/package.json
@@ -1,6 +1,6 @@
 {
   "scripts": {
-    "build": "OKAM=@alipay/umi-bundler-okam father build",
+    "build": "father build",
     "build:no-clean": "father build --no-clean",
     "dev": "father dev",
     "dev:no-clean": "father dev --no-clean",
diff --git a/src/builder/bundle/index.ts b/src/builder/bundle/index.ts
index f13ade76..d885d4b8 100644
--- a/src/builder/bundle/index.ts
+++ b/src/builder/bundle/index.ts
@@ -68,7 +68,7 @@ async function bundle(opts: IBundleOpts): Promise<void | IBundleWatcher> {
         chainWebpack: config.chainWebpack,
         define: config.define,
         devtool: config.sourcemap && ('source-map' as DevTool),
-        externals: config.externals || {},
+        externals: config.externals,
         outputPath: config.output.path,
 
         // postcss config
diff --git a/src/builder/bundle/utils.ts b/src/builder/bundle/utils.ts
deleted file mode 100644
index a855e24f..00000000
--- a/src/builder/bundle/utils.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import { chalk, lodash } from '@umijs/utils';
-import path from 'path';
-import { logger } from '../../utils';
-import type { IBundleConfig } from '../config';
-
-// workaround for combine continuous onBuildComplete log in watch mode
-export const logStatus = (config: IBundleConfig) => {
-  lodash.debounce(
-    () =>
-      logger.info(
-        `Bundle from ${chalk.yellow(config.entry)} to ${chalk.yellow(
-          path.join(config.output.path, config.output.filename),
-        )}`,
-      ),
-    100,
-    { leading: true, trailing: false },
-  );
-};