diff --git a/lib/builder/webpack/base.js b/lib/builder/webpack/base.js
index 50fff3af78..06953fddb8 100644
--- a/lib/builder/webpack/base.js
+++ b/lib/builder/webpack/base.js
@@ -220,7 +220,8 @@ export default class WebpackBaseConfig {
     // So we use css-loader/locals as a fallback (utils/style-loader)
     if (this.options.build.extractCSS && !this.isServer) {
       plugins.push(new MiniCssExtractPlugin(Object.assign({
-        filename: this.getFileName('css')
+        filename: this.getFileName('css'),
+        chunkFilename: this.getFileName('css')
       }, this.options.build.extractCSS)))
     }