diff --git a/packages/utils/src/resolve.js b/packages/utils/src/resolve.js
index 09972caa837b..79d43f516af0 100644
--- a/packages/utils/src/resolve.js
+++ b/packages/utils/src/resolve.js
@@ -18,10 +18,9 @@ export const wp = function wp (p = '') {
 }
 
 export const wChunk = function wChunk (p = '') {
-  if (isWindows) {
-    return p.replace(/\//g, '_')
-  }
-  return p
+  // workaround for SplitChunksPlugin that generate names starting from . for catchAll pages _.vue
+  // consider using https://webpack.js.org/configuration/output/#outputfilename for more robust control over filename generation
+  return p.replace('_', '[_]')
 }
 
 const reqSep = /\//g
diff --git a/packages/utils/test/resolve.win.test.js b/packages/utils/test/resolve.win.test.js
index 3feb80b84dc1..768e26a5aa36 100644
--- a/packages/utils/test/resolve.win.test.js
+++ b/packages/utils/test/resolve.win.test.js
@@ -12,7 +12,7 @@ describe.win('util: resolve windows', () => {
   })
 
   test('should format windows path', () => {
-    expect(wChunk('nuxt/layout/test')).toEqual('nuxt_layout_test')
+    expect(wChunk('nuxt/layout/test')).toEqual('nuxt/layout/test')
   })
 
   test('should resolve alias path', () => {
diff --git a/test/dev/extract-css.test.js b/test/dev/extract-css.test.js
index a507c69a3714..bb6086f3c980 100644
--- a/test/dev/extract-css.test.js
+++ b/test/dev/extract-css.test.js
@@ -5,7 +5,6 @@ import { loadFixture, getPort, Nuxt } from '../utils'
 
 let nuxt = null
 const readFile = promisify(fs.readFile)
-const isWindows = process.platform.startsWith('win')
 
 describe('extract css', () => {
   beforeAll(async () => {
@@ -17,7 +16,7 @@ describe('extract css', () => {
   })
 
   test('Verify global.css has been extracted and minified', async () => {
-    const fileName = isWindows ? 'pages_index.css' : 'pages/index.css'
+    const fileName = 'pages/index.css'
     const extractedIndexCss = resolve(__dirname, '..', 'fixtures/extract-css/.nuxt/dist/client', fileName)
     const content = await readFile(extractedIndexCss, 'utf-8')