diff --git a/roomserver/internal/input/input.go b/roomserver/internal/input/input.go
index e207015e..d07eaf41 100644
--- a/roomserver/internal/input/input.go
+++ b/roomserver/internal/input/input.go
@@ -102,6 +102,7 @@ type worker struct {
 	subscription *nats.Subscription
 	sentryHub    *sentry.Hub
 	ephemeralSeq uint64
+	// last seq we fully processed
 	durableSeq   uint64
 }
 
@@ -306,6 +307,7 @@ func (w *worker) _next() {
 		// from the queue. In which case, we'll shut down the subscriber
 		// and wait to be notified about new room activity again. Maybe
 		// the problem will be corrected by then.
+		// atomically clear the subscription and unsubscribe
 		w.Lock()
 
 		logrus.WithError(err).Errorf("Failed to get next stream message for room %q", w.roomID)