diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py

index 4eb0036edd..ac81fa3678 100644
--- a/synapse/handlers/identity.py
+++ b/synapse/handlers/identity.py
@@ -75,7 +75,10 @@ class IdentityHandler(BaseHandler):
         )
 
     def ratelimit_request_token_requests(
-        self, request: SynapseRequest, medium: str, address: str,
+        self,
+        request: SynapseRequest,
+        medium: str,
+        address: str,
     ):
         """Used to ratelimit requests to `/requestToken` by IP and address.