diff --git a/samples/azure-ad-b2c-sample/auth-frontend/app/package.json b/samples/azure-ad-b2c-sample/auth-frontend/app/package.json
index 1e4c79f7c..002a9918e 100644
--- a/samples/azure-ad-b2c-sample/auth-frontend/app/package.json
+++ b/samples/azure-ad-b2c-sample/auth-frontend/app/package.json
@@ -8,7 +8,7 @@
     "build:dev": "run-p type-check build-only:dev --print-label",
     "build-only:prod": "vite build --mode prod",
     "build-only:dev": "vite build --mode dev",
-    "preview": "vite preview --port 5050",
+    "preview": "vite preview",
     "test:unit": "vitest",
     "type-check": "vue-tsc --build --force",
     "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore",
diff --git a/samples/web-csr/dressca-frontend/consumer/package.json b/samples/web-csr/dressca-frontend/consumer/package.json
index 224150d7f..4b47c9268 100644
--- a/samples/web-csr/dressca-frontend/consumer/package.json
+++ b/samples/web-csr/dressca-frontend/consumer/package.json
@@ -8,7 +8,7 @@
     "build:dev": "run-p type-check build-only:dev --print-label",
     "build-only:prod": "vite build --mode prod",
     "build-only:dev": "vite build --mode dev",
-    "preview": "vite preview --port 5050",
+    "preview": "vite preview",
     "test:unit": "vitest",
     "test:e2e": "start-server-and-test dev http://localhost:5173/ 'cypress open --e2e --browser chrome'",
     "test:e2e:ci": "start-server-and-test dev http://localhost:5173/ 'cypress run'",