diff --git a/tests/test_runtime.py b/tests/test_runtime.py
index 3a4a89c..75885ba 100644
--- a/tests/test_runtime.py
+++ b/tests/test_runtime.py
@@ -357,7 +357,6 @@ async def discover(_platform_url):
             "https://runtime.example.test",
             RuntimeTransportPolicy(("pull",), "pull"),
             mtls_required=False,
-            credential_endpoint="not-a-valid-credential-endpoint",
         )
 
     def reject_credentials(*_args, **_kwargs):