X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fundo-stack-observer.h;h=dbda2b9809e04f867224b3efaa16c5fe6415af53;hb=ff3a165e5809a39bc3a331b5960cf9e41945ad77;hp=cd17c467575ca2415c89d0fb8d5db2b78658c3fc;hpb=4ec52515516e3a6bf2fbc3ed01a7e179bde16d20;p=inkscape.git

diff --git a/src/undo-stack-observer.h b/src/undo-stack-observer.h
index cd17c4675..dbda2b980 100644
--- a/src/undo-stack-observer.h
+++ b/src/undo-stack-observer.h
@@ -14,6 +14,8 @@
 #ifndef __UNDO_COMMIT_OBSERVER_H__
 #define __UNDO_COMMIT_OBSERVER_H__
 
+#include "gc-managed.h"
+
 namespace Inkscape {
 
 class Event;
@@ -32,7 +34,7 @@ class Event;
  * UndoStackObservers should not be used on their own.  Instead, they should be registered
  * with a CompositeUndoStackObserver.
  */
-class UndoStackObserver {
+class UndoStackObserver : public GC::Managed<> {
 public:
 	UndoStackObserver() { }
 	virtual ~UndoStackObserver() { }