diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 61657d36e..78ba5f25e 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -36,7 +36,6 @@ transaction_logger = logging.getLogger("synapse.storage.txn")
 
 
 # TODO(paul):
-#  * Move this somewhere higher-level, shared;
 #  * more generic key management
 #  * export monitoring stats
 #  * consider other eviction strategies - LRU?