diff --git a/include/osg/AudioStream b/include/osg/AudioStream
index a13ac9daa..04bc3bdd3 100644
--- a/include/osg/AudioStream
+++ b/include/osg/AudioStream
@@ -43,8 +43,8 @@ public:
 
 private:
 
-    virtual AudioSink * cloneType() const { return 0; }
-    virtual AudioSink * clone(const osg::CopyOp &) const { return 0; }
+    virtual Object* cloneType() const { return 0; }
+    virtual Object* clone(const osg::CopyOp &) const { return 0; }
 
     double  _delay;
 };
diff --git a/include/osg/CollectOccludersVisitor b/include/osg/CollectOccludersVisitor
index 8ab96499c..fbd9c6799 100644
--- a/include/osg/CollectOccludersVisitor
+++ b/include/osg/CollectOccludersVisitor
@@ -33,7 +33,7 @@ class OSG_EXPORT CollectOccludersVisitor : public osg::NodeVisitor, public osg::
 
         META_NodeVisitor(osg, CollectOccludersVisitor)
 
-        virtual CollectOccludersVisitor* cloneType() const { return new CollectOccludersVisitor(); }
+        virtual Object* cloneType() const { return new CollectOccludersVisitor(); }
 
         virtual void reset();