diff --git a/docs/auth.rst b/docs/auth.rst
index 04e6f41e5..dfc8a47e9 100644
--- a/docs/auth.rst
+++ b/docs/auth.rst
@@ -205,10 +205,7 @@ using :py:meth:`~openeo.rest.connection.Connection.authenticate_oidc_refresh_tok
 
 .. code-block:: python
 
-    connection.authenticate_oidc_refresh_token(
-        client_secret=client_secret,
-        client_id=client_id
-    )
+    connection.authenticate_oidc_refresh_token()
 
 You can also bootstrap the refresh token file
 as described in :ref:`oidc_auth_get_refresh_token`
diff --git a/openeo/rest/connection.py b/openeo/rest/connection.py
index ee8e9ef30..df6f9c3cc 100644
--- a/openeo/rest/connection.py
+++ b/openeo/rest/connection.py
@@ -448,8 +448,8 @@ def _get_oidc_provider(
     def _get_oidc_provider_and_client_info(
         self,
         provider_id: str,
-        client_id: Union[str, None],
-        client_secret: Union[str, None],
+        client_id: Union[str, None] = None,
+        client_secret: Union[str, None] = None,
         default_client_grant_check: Union[None, GrantsChecker] = None,
     ) -> Tuple[str, OidcClientInfo]:
         """