diff --git a/packages/playground/legacy/__tests__/legacy.spec.ts b/packages/playground/legacy/__tests__/legacy.spec.ts
index 7263174e84b074..f1e317246ee852 100644
--- a/packages/playground/legacy/__tests__/legacy.spec.ts
+++ b/packages/playground/legacy/__tests__/legacy.spec.ts
@@ -1,4 +1,4 @@
-import { isBuild, untilUpdated } from '../../testUtils'
+import { isBuild, readManifest, untilUpdated } from '../../testUtils'
 
 test('should work', async () => {
   expect(await page.textContent('#app')).toMatch('Hello')
@@ -44,3 +44,13 @@ test('generates assets', async () => {
     true
   )
 })
+
+if (isBuild) {
+  test('should generate correct manifest', async () => {
+    const manifest = readManifest()
+    expect(manifest['../../../vite/legacy-polyfills']).toBeDefined()
+    expect(manifest['../../../vite/legacy-polyfills'].src).toBe(
+      '../../../vite/legacy-polyfills'
+    )
+  })
+}
diff --git a/packages/playground/legacy/vite.config.js b/packages/playground/legacy/vite.config.js
index 3d7d6b37d11451..da8addec974673 100644
--- a/packages/playground/legacy/vite.config.js
+++ b/packages/playground/legacy/vite.config.js
@@ -10,6 +10,7 @@ module.exports = {
   ],
 
   build: {
+    manifest: true,
     rollupOptions: {
       output: {
         chunkFileNames(chunkInfo) {
diff --git a/packages/vite/src/node/plugins/manifest.ts b/packages/vite/src/node/plugins/manifest.ts
index 782bc317a2c5af..2ce4869e67d98d 100644
--- a/packages/vite/src/node/plugins/manifest.ts
+++ b/packages/vite/src/node/plugins/manifest.ts
@@ -41,7 +41,7 @@ export function manifestPlugin(config: ResolvedConfig): Plugin {
             const ext = path.extname(name)
             name = name.slice(0, -ext.length) + `-legacy` + ext
           }
-          return name
+          return name.replace(/\0/g, '')
         } else {
           return `_` + path.basename(chunk.fileName)
         }