diff --git a/packages/browser/package.json b/packages/browser/package.json
index e7aad5ce9cad..23d616c3e1bb 100644
--- a/packages/browser/package.json
+++ b/packages/browser/package.json
@@ -24,7 +24,7 @@
     "stubs"
   ],
   "scripts": {
-    "build": "rimraf dist && pnpm build:node && pnpm build:client",
+    "build": "rimraf dist && pnpm build:node && pnpm build:client && pnpm copy",
     "build:client": "vite build src/client",
     "build:node": "rollup -c",
     "dev:client": "vite build src/client --watch",
diff --git a/packages/browser/scripts/copy-ui-to-browser.ts b/packages/browser/scripts/copy-ui-to-browser.ts
index e7f1d29dd556..daf28ab0a76e 100644
--- a/packages/browser/scripts/copy-ui-to-browser.ts
+++ b/packages/browser/scripts/copy-ui-to-browser.ts
@@ -10,6 +10,9 @@ const browser = resolve(root, 'browser/dist/client/__vitest__/')
 
 const files = fg.sync('**/*', { cwd: ui })
 
+if (fs.existsSync(browser))
+  fs.rmSync(browser, { recursive: true })
+
 fs.mkdirSync(browser)
 fs.mkdirSync(resolve(browser, 'assets'))