diff --git a/libs/pbd/pbd/statefuldestructible.h b/libs/pbd/pbd/statefuldestructible.h
index 274457c88f..3881aff97a 100644
--- a/libs/pbd/pbd/statefuldestructible.h
+++ b/libs/pbd/pbd/statefuldestructible.h
@@ -26,7 +26,7 @@
 namespace PBD {
 
 /** Base class for objects with saveable and undoable state with destruction notification */
-class LIBPBD_API StatefulDestructible : public Stateful, virtual public Destructible
+class LIBPBD_API StatefulDestructible : virtual public Stateful, virtual public Destructible
 {
 };