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-rw-r--r--gtk2_ardour/canvas-note-event.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gtk2_ardour/canvas-note-event.h b/gtk2_ardour/canvas-note-event.h
index 75747bc288..86f7312d17 100644
--- a/gtk2_ardour/canvas-note-event.h
+++ b/gtk2_ardour/canvas-note-event.h
@@ -49,7 +49,7 @@ namespace Canvas {
*
* A newer, better canvas should remove the need for all the ugly here.
*/
-class CanvasNoteEvent : public sigc::trackable, public InteractiveItem {
+class CanvasNoteEvent : virtual public sigc::trackable, public InteractiveItem {
public:
typedef Evoral::Note<double> NoteType;
CanvasNoteEvent(