diff --git a/synapse/http/client.py b/synapse/http/client.py
index 30e8b287b6..368b0d49b7 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -103,7 +103,8 @@ class IPBlacklistingResolver(object):
                     ip_address, self._ip_whitelist, self._ip_blacklist
                 ):
                     logger.info(
-                        "Dropped %s from DNS resolution to %s due to blacklist" % (ip_address, hostname)
+                        "Dropped %s from DNS resolution to %s due to blacklist" %
+                        (ip_address, hostname)
                     )
                     has_bad_ip = True
 
@@ -164,7 +165,8 @@ class BlacklistingAgentWrapper(Agent):
                 ip_address, self._ip_whitelist, self._ip_blacklist
             ):
                 logger.info(
-                    "Blocking access to %s because of blacklist. Returning 0 results" % (ip_address,)
+                    "Blocking access to %s because of blacklist. Returning 0 results" %
+                    (ip_address,)
                 )
                 e = SynapseError(404, "No results found")
                 return defer.fail(Failure(e))
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 07882bbd80..f1f24ebd1c 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -335,7 +335,8 @@ class PreviewUrlResource(Resource):
 
                 if isinstance(e, DNSLookupError):
                     # DNS lookup returned no results
-                    # Note: This will also be the case if the found IP address is blacklisted
+                    # Note: This will also be the case if the found IP address
+                    # is blacklisted
                     raise SynapseError(
                         404, "No results found", Codes.UNKNOWN
                     )