diff --git a/playground/css-lightningcss-root/root/index.html b/playground/css-lightningcss-root/dir/index.html
similarity index 100%
rename from playground/css-lightningcss-root/root/index.html
rename to playground/css-lightningcss-root/dir/index.html
diff --git a/playground/css-lightningcss-root/root/main.js b/playground/css-lightningcss-root/dir/main.js
similarity index 100%
rename from playground/css-lightningcss-root/root/main.js
rename to playground/css-lightningcss-root/dir/main.js
diff --git a/playground/css-lightningcss-root/root/ok.png b/playground/css-lightningcss-root/dir/ok.png
similarity index 100%
rename from playground/css-lightningcss-root/root/ok.png
rename to playground/css-lightningcss-root/dir/ok.png
diff --git a/playground/css-lightningcss-root/root/url-dep.css b/playground/css-lightningcss-root/dir/url-dep.css
similarity index 100%
rename from playground/css-lightningcss-root/root/url-dep.css
rename to playground/css-lightningcss-root/dir/url-dep.css
diff --git a/playground/css-lightningcss-root/vite.config.js b/playground/css-lightningcss-root/vite.config.js
index 6e42d3e20e28be..df968195a3f07e 100644
--- a/playground/css-lightningcss-root/vite.config.js
+++ b/playground/css-lightningcss-root/vite.config.js
@@ -1,7 +1,7 @@
 import { defineConfig } from 'vite'
 
 export default defineConfig({
-  root: 'root',
+  root: 'dir',
   css: {
     transformer: 'lightningcss',
   },