diff --git a/gtk2_ardour/editor_selection.cc b/gtk2_ardour/editor_selection.cc
index 5875fffbfa..6e37868aa3 100644
--- a/gtk2_ardour/editor_selection.cc
+++ b/gtk2_ardour/editor_selection.cc
@@ -1231,8 +1231,6 @@ Editor::select_all_in_track (Selection::Operation op)
 void
 Editor::select_all_internal_edit (Selection::Operation)
 {
-	/* currently limited to MIDI only */
-
 	for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
 		MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
 		if (mrv) {
@@ -1274,6 +1272,7 @@ Editor::select_all (Selection::Operation op)
 	}
 	commit_reversible_command ();
 }
+
 void
 Editor::invert_selection_in_track ()
 {
@@ -1292,6 +1291,16 @@ Editor::invert_selection ()
 {
 	list<Selectable *> touched;
 
+	if (_internal_editing) {
+		for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
+			MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
+			if (mrv) {
+				mrv->invert_selection ();
+			}
+		}
+		return;
+	}
+
 	for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
 		if ((*iter)->hidden()) {
 			continue;
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index b79d97d746..50eda1023b 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -2027,6 +2027,18 @@ MidiRegionView::select_all_notes ()
 	}
 }
 
+void
+MidiRegionView::invert_selection ()
+{
+	for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
+		if ((*i)->selected()) {
+			remove_from_selection(*i);
+		} else {
+			add_to_selection (*i);
+		}
+	}
+}
+
 void
 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
 {
diff --git a/gtk2_ardour/midi_region_view.h b/gtk2_ardour/midi_region_view.h
index a878aa13dd..38cd703a98 100644
--- a/gtk2_ardour/midi_region_view.h
+++ b/gtk2_ardour/midi_region_view.h
@@ -192,6 +192,7 @@ public:
 	void   delete_note (boost::shared_ptr<NoteType>);
 	size_t selection_size() { return _selection.size(); }
 	void   select_all_notes ();
+	void   invert_selection ();
 
 	void move_selection(double dx, double dy, double cumulative_dy);
 	void note_dropped (ArdourCanvas::CanvasNoteEvent* ev, ARDOUR::frameoffset_t, int8_t d_note);