diff --git a/libs/ardour/audio_track.cc b/libs/ardour/audio_track.cc
index 8e14fff402..94201882e7 100644
--- a/libs/ardour/audio_track.cc
+++ b/libs/ardour/audio_track.cc
@@ -369,6 +369,13 @@ AudioTrack::roll (pframes_t nframes, framepos_t start_frame, framepos_t end_fram
 
 	process_output_buffers (bufs, start_frame, end_frame, nframes, declick, (!diskstream->record_enabled() && _session.transport_rolling()));
 
+	for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
+		boost::shared_ptr<Delivery> d = boost::dynamic_pointer_cast<Delivery> (*i);
+		if (d) {
+			d->flush_buffers (nframes);
+		}
+	}
+
 	need_butler = diskstream->commit (playback_distance);
 
 	return 0;