diff --git a/Polyhedron/demo/Polyhedron/Plugins/Operations_on_polyhedra/Surface_mesh_to_polyhedron_plugin.cpp b/Polyhedron/demo/Polyhedron/Plugins/Operations_on_polyhedra/Surface_mesh_to_polyhedron_plugin.cpp
index 93bd4bfe012..68dbcdfaff6 100644
--- a/Polyhedron/demo/Polyhedron/Plugins/Operations_on_polyhedra/Surface_mesh_to_polyhedron_plugin.cpp
+++ b/Polyhedron/demo/Polyhedron/Plugins/Operations_on_polyhedra/Surface_mesh_to_polyhedron_plugin.cpp
@@ -74,7 +74,6 @@ public Q_SLOTS:
 
   void on_actionToSM_triggered()
   {
-    typedef Scene_surface_mesh_item::SMesh SMesh;
     Scene_polyhedron_item* poly_item = qobject_cast<Scene_polyhedron_item*>(scene->item(scene->mainSelectionIndex()));
     if(!poly_item)
       return;