diff --git a/tests/port-forwarding-server.spec.ts b/tests/port-forwarding-server.spec.ts
index bbe5d7e1d9..660ddaf022 100644
--- a/tests/port-forwarding-server.spec.ts
+++ b/tests/port-forwarding-server.spec.ts
@@ -146,5 +146,5 @@ it('should lead to the error page for forwarded requests when the connection is
   else if (browserName === 'webkit')
     expect(error.message).toBeTruthy();
   else if (browserName === 'firefox')
-    expect(error.message).toContain('NS_ERROR_CONNECTION_REFUSED');
+    expect(error.message.includes('NS_ERROR_NET_RESET') || error.message.includes('NS_ERROR_CONNECTION_REFUSED')).toBe(true);
 });