diff --git a/packages/playwright-test/src/plugins/webServerPlugin.ts b/packages/playwright-test/src/plugins/webServerPlugin.ts
index a7372d2573..9e708074c5 100644
--- a/packages/playwright-test/src/plugins/webServerPlugin.ts
+++ b/packages/playwright-test/src/plugins/webServerPlugin.ts
@@ -153,7 +153,7 @@ async function isURLAvailable(url: URL, ignoreHTTPSErrors: boolean, onStdErr: Re
     indexUrl.pathname = '/index.html';
     statusCode = await httpStatusCode(indexUrl, ignoreHTTPSErrors, onStdErr);
   }
-  return statusCode >= 200 && statusCode < 300;
+  return statusCode >= 200 && statusCode < 404;
 }
 
 async function httpStatusCode(url: URL, ignoreHTTPSErrors: boolean, onStdErr: Reporter['onStdErr']): Promise<number> {
diff --git a/tests/playwright-test/assets/simple-server.js b/tests/playwright-test/assets/simple-server.js
index bea8268a74..b1d7b217af 100644
--- a/tests/playwright-test/assets/simple-server.js
+++ b/tests/playwright-test/assets/simple-server.js
@@ -13,5 +13,9 @@ setTimeout(() => {
     server.setRoute('/port', (_, response) => {
       response.end('' + server.PORT);
     });
+    server.setRoute('/redirect', (_, response) => {
+      response.writeHead(301, 'Moved');
+      response.end();
+    });
   });
 }, process.argv[3] ? +process.argv[3] : 0);
diff --git a/tests/playwright-test/web-server.spec.ts b/tests/playwright-test/web-server.spec.ts
index 96f2f97beb..4a3c46d43b 100644
--- a/tests/playwright-test/web-server.spec.ts
+++ b/tests/playwright-test/web-server.spec.ts
@@ -546,3 +546,26 @@ test.describe('baseURL with plugins', () => {
     expect(result.passed).toBe(1);
   });
 });
+
+test('should treat 3XX as available server', async ({ runInlineTest }, { workerIndex }) => {
+  const port = workerIndex + 10500;
+  const result = await runInlineTest({
+    'test.spec.ts': `
+      const { test } = pwt;
+      test('pass', async ({}) => {});
+    `,
+    'playwright.config.ts': `
+      module.exports = {
+        webServer: {
+          command: 'node ${JSON.stringify(SIMPLE_SERVER_PATH)} ${port}',
+          url: 'http://localhost:${port}/redirect',
+        }
+      };
+    `,
+  }, {}, { DEBUG: 'pw:webserver' });
+  expect(result.exitCode).toBe(0);
+  expect(result.passed).toBe(1);
+  expect(result.output).toContain('[WebServer] listening');
+  expect(result.output).toContain('[WebServer] error from server');
+});
+