diff --git a/tests/services/conftest.py b/tests/services/conftest.py
index 882ea5c..5a70c9b 100644
--- a/tests/services/conftest.py
+++ b/tests/services/conftest.py
@@ -23,6 +23,7 @@ def keycloak(keycloak_service):
         "scope": ("openid", "profile", "email"),
         "redirect_uris": ("/login_oidc/oidc",),
         "create_restapi_ticket": True,
+        "identity_domain_name": "blah",  # ensure non OAM SP ignores extra params/header
     }