diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py
index f5c3ba23a6..0dacd9e357 100644
--- a/synapse/handlers/user_directory.py
+++ b/synapse/handlers/user_directory.py
@@ -14,7 +14,6 @@
# limitations under the License.
import logging
-import synapse.metrics
from six import iteritems
diff --git a/synapse/replication/http/__init__.py b/synapse/replication/http/__init__.py
index f46a580be2..3807d2ac6f 100644
--- a/synapse/replication/http/__init__.py
+++ b/synapse/replication/http/__init__.py
@@ -14,7 +14,7 @@
# limitations under the License.
from synapse.http.server import JsonResource
-from synapse.replication.http import federation, membership, send_event, registration
+from synapse.replication.http import federation, membership, registration, send_event
REPLICATION_PREFIX = "/_synapse/replication"
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 35319f7a79..ca9a850817 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -24,7 +24,6 @@ from twisted.internet import defer
import synapse
import synapse.types
-from synapse.replication.http.registration import RegistrationUserCacheInvalidationServlet
from synapse.api.constants import LoginType
from synapse.api.errors import Codes, SynapseError, UnrecognizedRequestError
from synapse.config.server import is_threepid_reserved
@@ -34,6 +33,9 @@ from synapse.http.servlet import (
parse_json_object_from_request,
parse_string,
)
+from synapse.replication.http.registration import (
+ RegistrationUserCacheInvalidationServlet,
+)
from synapse.util.msisdn import phone_number_to_msisdn
from synapse.util.ratelimitutils import FederationRateLimiter
from synapse.util.threepids import check_3pid_allowed
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