diff --git a/gtk2_ardour/midi_view.cc b/gtk2_ardour/midi_view.cc
index 1e50e87637..be9dc790f0 100644
--- a/gtk2_ardour/midi_view.cc
+++ b/gtk2_ardour/midi_view.cc
@@ -1663,6 +1663,8 @@ MidiView::start_playing_midi_chord (vector<std::shared_ptr<NoteType> > notes)
 	}
 
 	player->play ();
+
+	/* player is deleted after a timeout when its ::off() method is invokved */
 }
 
 bool