diff --git a/certbot-ci/windows_installer_integration_tests/test_main.py b/certbot-ci/windows_installer_integration_tests/test_main.py
index 208405a34..2ab6a7d3f 100644
--- a/certbot-ci/windows_installer_integration_tests/test_main.py
+++ b/certbot-ci/windows_installer_integration_tests/test_main.py
@@ -65,8 +65,8 @@ class _ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
 @pytest.fixture
 def github_mock(installer):
     """
-    This fixture starts a GitHub release API mock on localhost:8009. This mock returns a
-    compliant GitHub release payload declaring that Certbot v99.9.9 is available.
+    This fixture starts a GitHub release API mock on localhost using the port GITHUB_FAKE_API_PORT.
+    This mock returns a compliant GitHub release payload declaring that Certbot v99.9.9 is available.
     The assets path associated allows to download on localhost the signed Certbot installer
     used during the tests.
     """