diff --git a/include/osgDB/DatabasePager b/include/osgDB/DatabasePager
index 72d51c31d..480b8c10d 100644
--- a/include/osgDB/DatabasePager
+++ b/include/osgDB/DatabasePager
@@ -50,7 +50,9 @@ class OSGDB_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseRequestHandl
         DatabasePager();
 
         DatabasePager(const DatabasePager& rhs);
-        
+
+        virtual const char* className() const { return "DatabasePager"; }
+
         /** Create a shallow copy on the DatabasePager.*/
         virtual DatabasePager* clone() const { return new DatabasePager(*this); }
 
diff --git a/include/osgShadow/ViewDependentShadowTechnique b/include/osgShadow/ViewDependentShadowTechnique
index 168374cdb..6044ab745 100644
--- a/include/osgShadow/ViewDependentShadowTechnique
+++ b/include/osgShadow/ViewDependentShadowTechnique
@@ -150,6 +150,8 @@ class OSGSHADOW_EXPORT ViewDependentShadowTechnique
         */
         struct OSGSHADOW_EXPORT ViewData: public osg::Referenced
         {
+            virtual const char* className() const { return "ViewData"; }
+
             /**
             Method called upon ViewData instance to initialize internal variables
             */
diff --git a/include/osgViewer/Scene b/include/osgViewer/Scene
index 51ecf4c97..ad4cf3c8a 100644
--- a/include/osgViewer/Scene
+++ b/include/osgViewer/Scene
@@ -30,6 +30,8 @@ class OSGVIEWER_EXPORT Scene : public osg::Referenced
 {
     public:
 
+        virtual const char* className() const { return "Scene"; }
+
         void setSceneData(osg::Node* node);
         osg::Node* getSceneData();
         const osg::Node* getSceneData() const;