diff --git a/keycloak_collective_portal.py b/keycloak_collective_portal.py
index d0492bf..ac674b3 100644
--- a/keycloak_collective_portal.py
+++ b/keycloak_collective_portal.py
@@ -23,7 +23,7 @@ oauth.register(
     client_kwargs={"scope": "openid profile email"},
     client_id=KEYCLOAK_CLIENT_ID,
     client_secret=KEYCLOAK_CLIENT_SECRET,
-    server_metadata_url=f"https://{environ.get('KEYCLOAK_DOMAIN')}/.well-known/openid-configuration",  # noqa
+    server_metadata_url=KEYCLOAK_DOMAIN,
 )