diff --git a/include/osgGA/GUIEventHandler b/include/osgGA/GUIEventHandler
index ef4bcdaa0..300942aab 100644
--- a/include/osgGA/GUIEventHandler
+++ b/include/osgGA/GUIEventHandler
@@ -86,7 +86,7 @@ public:
 
         typedef std::vector< osg::ref_ptr<GUIEventHandler> > ChildList;
 
-        virtual const char* className() { return "CompositeGUIEventHandler"; }
+        virtual const char* className() const { return "CompositeGUIEventHandler"; }
 
         virtual const CompositeGUIEventHandler* getComposite() const { return this; }
 
diff --git a/include/osgGA/KeySwitchMatrixManipulator b/include/osgGA/KeySwitchMatrixManipulator
index 8fa55e0c6..50687072b 100644
--- a/include/osgGA/KeySwitchMatrixManipulator
+++ b/include/osgGA/KeySwitchMatrixManipulator
@@ -34,7 +34,7 @@ class OSGGA_EXPORT KeySwitchMatrixManipulator : public MatrixManipulator
 {
 public:
 
-        virtual const char* className() { return "KeySwitchMatrixManipulator"; }
+        virtual const char* className() const { return "KeySwitchMatrixManipulator"; }
 
         /**
         Add a camera manipulator with an associated name, and a key to
diff --git a/include/osgGA/StateSetManipulator b/include/osgGA/StateSetManipulator
index 33781ded3..3c99a3c44 100644
--- a/include/osgGA/StateSetManipulator
+++ b/include/osgGA/StateSetManipulator
@@ -34,7 +34,7 @@ public:
         StateSetManipulator();
         virtual ~StateSetManipulator();
 
-        virtual const char* className() { return "StateSetManipulator"; }
+        virtual const char* className() const { return "StateSetManipulator"; }
 
         /** attach a geostate to the manipulator to be used for specifying view.*/
         virtual void setStateSet(osg::StateSet*);