diff --git a/synapse/federation/federation_base.py b/synapse/federation/federation_base.py
index 6799ed05a..299493af9 100644
--- a/synapse/federation/federation_base.py
+++ b/synapse/federation/federation_base.py
@@ -118,7 +118,7 @@ class FederationBase(object):
             )
         except SynapseError:
             logger.warn(
-                "Signature check failed for %s, redacting",
+                "Signature check failed for %s",
                 pdu.event_id,
             )
             raise