diff --git a/Polyhedron/demo/Polyhedron/Plugins/AABB_tree/Cut_plugin.cpp b/Polyhedron/demo/Polyhedron/Plugins/AABB_tree/Cut_plugin.cpp
index d32bb11e8b5..5ff4e16e3a5 100644
--- a/Polyhedron/demo/Polyhedron/Plugins/AABB_tree/Cut_plugin.cpp
+++ b/Polyhedron/demo/Polyhedron/Plugins/AABB_tree/Cut_plugin.cpp
@@ -829,7 +829,7 @@ public:
   QList<Scene_item*> load(QFileInfo , bool& ok, bool add_to_scene=true) Q_DECL_OVERRIDE
 
   {
-    CGAL_UNUSED(add_to_scene);
+    Q_UNUSED(add_to_scene);
     ok = false;
     return QList<Scene_item*>();
   }