diff --git a/tests/library/proxy.spec.ts b/tests/library/proxy.spec.ts
index b7df2b66f7a7f..6cd1cb401d8dc 100644
--- a/tests/library/proxy.spec.ts
+++ b/tests/library/proxy.spec.ts
@@ -323,7 +323,7 @@ it('should use SOCKS proxy for websocket requests', async ({ browserType, server
   await closeProxyServer();
 });
 
-it('should use http proxy for websocket requests', async ({ browserName, browserType, server, proxyServer }) => {
+it('should use http proxy for websocket requests', async ({ browserName, browserType, server, proxyServer, isWindows }) => {
   proxyServer.forwardTo(server.PORT, { allowConnectRequests: true });
   const browser = await browserType.launch({
     proxy: { server: `localhost:${proxyServer.PORT}` }
@@ -350,7 +350,7 @@ it('should use http proxy for websocket requests', async ({ browserName, browser
 
   // WebKit does not use CONNECT for websockets, but other browsers do.
   if (browserName === 'webkit')
-    expect(proxyServer.wsUrls).toContain('ws://fake-localhost-127-0-0-1.nip.io:1337/ws');
+    expect(proxyServer.wsUrls).toContain(isWindows ? '/ws' : 'ws://fake-localhost-127-0-0-1.nip.io:1337/ws');
   else
     expect(proxyServer.connectHosts).toContain('fake-localhost-127-0-0-1.nip.io:1337');