diff --git a/include/osgUtil/DepthSortedBin b/include/osgUtil/DepthSortedBin
index 45d75ae84..bd565360e 100644
--- a/include/osgUtil/DepthSortedBin
+++ b/include/osgUtil/DepthSortedBin
@@ -16,7 +16,8 @@ class OSGUTIL_EXPORT DepthSortedBin : public RenderBin
 
         DepthSortedBin();
 
-        virtual osg::Object* clone() const { return new DepthSortedBin(); }
+        virtual osg::Object* cloneType() const { return new DepthSortedBin(); }
+        virtual osg::Object* clone(const osg::CopyOp&) const { return new DepthSortedBin(); } // note only implements a clone of type.
         virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const DepthSortedBin*>(obj)!=0L; }
         virtual const char* className() const { return "DepthSortedBin"; }