diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index 14da8e942e..6297a77f69 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -4773,3 +4773,33 @@ MidiRegionView::sync_velocity_drag (double factor)
 		s->set_velocity (factor);
 	}
 }
+
+void
+MidiRegionView::start_note_splitting ()
+{
+}
+
+void
+MidiRegionView::end_note_splitting ()
+{
+}
+
+void
+MidiRegionView::split_notes_grid ()
+{
+}
+
+void
+MidiRegionView::split_notes_more ()
+{
+}
+
+void
+MidiRegionView::split_notes_less ()
+{
+}
+
+void
+MidiRegionView::join_notes ()
+{
+}