diff --git a/zerver/tornado/handlers.py b/zerver/tornado/handlers.py
index 063db261aa..51a1229ecd 100644
--- a/zerver/tornado/handlers.py
+++ b/zerver/tornado/handlers.py
@@ -210,9 +210,10 @@ class AsyncDjangoHandler(tornado.web.RequestHandler):
         # Register a Tornado handler that runs when client-side
         # connections are closed to notify the events system.
         #
-        # TODO: Theoretically, this code should run when you Ctrl-C
-        # curl to cause it to break a `GET /events` connection, but
-        # that seems to no longer run this code.  Investigate what's up.
+        # Note that in the development environment, the development
+        # proxy does not correctly close connections to Tornado when
+        # its clients (e.g. `curl`) close their connections.  This
+        # code path is thus _unreachable except in production_.
         client_descriptor = get_descriptor_by_handler_id(self.handler_id)
         if client_descriptor is not None:
             client_descriptor.disconnect_handler(client_closed=True)