diff --git a/include/osgUtil/RenderLeaf b/include/osgUtil/RenderLeaf
index 6fd2dc55e..51184efe5 100644
--- a/include/osgUtil/RenderLeaf
+++ b/include/osgUtil/RenderLeaf
@@ -78,12 +78,10 @@ class OSGUTIL_EXPORT RenderLeaf : public osg::Referenced
 
 #if 1
         osg::Drawable*                  _drawable;
-        osg::Drawable* getDrawable() { return _drawable; }
-        osg::Drawable* getDrawable() const { return _drawable; }
+        const osg::Drawable* getDrawable() const { return _drawable; }
 #else
         osg::ref_ptr<osg::Drawable>     _drawable;
-        osg::Drawable* getDrawable() { return _drawable.get(); }
-        osg::Drawable* getDrawable() const { return _drawable.get(); }
+        const osg::Drawable* getDrawable() const { return _drawable.get(); }
 #endif        
         osg::ref_ptr<osg::RefMatrix>    _projection;
         osg::ref_ptr<osg::RefMatrix>    _modelview;