diff --git a/synapse/rest/client/v2_alpha/tags.py b/synapse/rest/client/v2_alpha/tags.py
index 4e3f917fc5..dcfe6bd20e 100644
--- a/synapse/rest/client/v2_alpha/tags.py
+++ b/synapse/rest/client/v2_alpha/tags.py
@@ -98,7 +98,6 @@ class TagServlet(RestServlet):
             "private_user_data_key", max_id, users=[user_id]
         )
 
-        # TODO: poke the notifier.
         defer.returnValue((200, {}))