diff --git a/playground/legacy/vite.config-no-polyfills-no-systemjs.js b/playground/legacy/vite.config-no-polyfills-no-systemjs.js
index e87b1cc3e6a8d0..3e3c93f31d63ff 100644
--- a/playground/legacy/vite.config-no-polyfills-no-systemjs.js
+++ b/playground/legacy/vite.config-no-polyfills-no-systemjs.js
@@ -18,6 +18,7 @@ export default defineConfig({
   ],
 
   build: {
+    outDir: 'dist/no-polyfills-no-systemjs',
     rollupOptions: {
       input: {
         index: path.resolve(__dirname, 'no-polyfills-no-systemjs.html'),
diff --git a/playground/legacy/vite.config-no-polyfills.js b/playground/legacy/vite.config-no-polyfills.js
index 709fc7f38b1ce4..e1bb5d364851a1 100644
--- a/playground/legacy/vite.config-no-polyfills.js
+++ b/playground/legacy/vite.config-no-polyfills.js
@@ -17,6 +17,7 @@ export default defineConfig({
   ],
 
   build: {
+    outDir: 'dist/no-polyfills',
     rollupOptions: {
       input: {
         index: path.resolve(__dirname, 'no-polyfills.html'),