diff --git a/libs/pbd/pbd/stateful_owner.h b/libs/pbd/pbd/stateful_owner.h
deleted file mode 100644
index 1c1509aefd..0000000000
--- a/libs/pbd/pbd/stateful_owner.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
-    Copyright (C) 2000-2010 Paul Davis 
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
-
-#ifndef __pbd_stateful_owner_h__
-#define __pbd_stateful_owner_h__
-
-#include <vector>
-
-namespace PBD {
-
-class StatefulDiffCommand;
-
-/** Base (pure virtual) class for objects with other Stateful's within */
-class StatefulOwner {
-  public:
-	StatefulOwner () {}
-	virtual ~StatefulOwner () {}
-
-        virtual void rdiff (std::vector<StatefulDiffCommand*>& cmds) const = 0;
-        virtual void clear_owned_history () = 0;
-};
-
-} // namespace PBD
-
-#endif /* __pbd_stateful_owner_h__ */
-