diff --git a/components/sceneutil/attach.hpp b/components/sceneutil/attach.hpp
index a8a2239a84..806fc53488 100644
--- a/components/sceneutil/attach.hpp
+++ b/components/sceneutil/attach.hpp
@@ -14,12 +14,12 @@ namespace osg
 namespace SceneUtil
 {
 
-    /// Attach parts of the \a toAttach scenegraph to the \a master scenegraph, using the specified filter and attachment node.
+    /// Clone and attach parts of the \a toAttach scenegraph to the \a master scenegraph, using the specified filter and attachment node.
     /// If the \a toAttach scene graph contains skinned objects, we will attach only those (filtered by the \a filter).
     /// Otherwise, just attach all of the toAttach scenegraph to the attachment node on the master scenegraph, with no filtering.
     /// @note The master scene graph is expected to include a skeleton.
     /// @return A newly created node that is directly attached to the master scene graph
-    osg::ref_ptr<osg::Node> attach(osg::ref_ptr<osg::Node> toAttach, osg::Node* master, const std::string& filter, osg::Group* attachNode);
+    osg::ref_ptr<osg::Node> attach(osg::ref_ptr<const osg::Node> toAttach, osg::Node* master, const std::string& filter, osg::Group* attachNode);
 
 }