diff --git a/synapse/api/auth/msc3861_delegated.py b/synapse/api/auth/msc3861_delegated.py
index 3cf00dd53929..da21accdd0e0 100644
--- a/synapse/api/auth/msc3861_delegated.py
+++ b/synapse/api/auth/msc3861_delegated.py
@@ -28,7 +28,6 @@
 from synapse.api.auth.base import BaseAuth
 from synapse.api.errors import (
     AuthError,
-    Codes,
     HttpResponseException,
     InvalidClientTokenError,
     OAuthInsufficientScopeError,