diff --git a/synapse/handlers/read_marker.py b/synapse/handlers/read_marker.py
index c3882313e..ee8cfc1c7 100644
--- a/synapse/handlers/read_marker.py
+++ b/synapse/handlers/read_marker.py
@@ -18,7 +18,6 @@ from ._base import BaseHandler
 from twisted.internet import defer
 
 from synapse.util.async import Linearizer
-from synapse.api.errors import SynapseError
 
 import logging
 logger = logging.getLogger(__name__)