diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index f87e84db7..9ceb66e6f 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -429,7 +429,6 @@ class FederationClient(object):
 
         defer.returnValue(signed_pdus)
 
-
     @defer.inlineCallbacks
     def _check_sigs_and_hash(self, pdu):
         """Throws a SynapseError if the PDU does not have the correct