1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/handlers/oidc_handler.py b/synapse/handlers/oidc_handler.py
index f5d1821127..01c91f9d1c 100644
--- a/synapse/handlers/oidc_handler.py
+++ b/synapse/handlers/oidc_handler.py
@@ -330,6 +330,9 @@ class OidcProvider:
         # optional brand identifier for this auth provider
         self.idp_brand = provider.idp_brand
 
+        # Optional brand identifier for the unstable API (see MSC2858).
+        self.unstable_idp_brand = provider.unstable_idp_brand
+
         self._sso_handler = hs.get_sso_handler()
 
         self._sso_handler.register_identity_provider(self)