diff --git a/Orthtree/include/CGAL/Orthtree/Node.h b/Orthtree/include/CGAL/Orthtree/Node.h
index 74d7fb2aa28..5c7b762fc97 100644
--- a/Orthtree/include/CGAL/Orthtree/Node.h
+++ b/Orthtree/include/CGAL/Orthtree/Node.h
@@ -75,7 +75,7 @@ public:
   /*!
     \brief self typedef for convenience
    */
-  typedef Orthtree<Traits, PointRange, PointMap>::Node Self;
+  typedef typename Orthtree<Traits, PointRange, PointMap>::Node Self;
 
 
   /// \cond SKIP_IN_MANUAL