diff --git a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Periodic_3_triangulation_filtered_traits_3.h b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Periodic_3_triangulation_filtered_traits_3.h
index 88f71afc379..7867ea9597b 100644
--- a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Periodic_3_triangulation_filtered_traits_3.h
+++ b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Periodic_3_triangulation_filtered_traits_3.h
@@ -162,14 +162,15 @@ class Periodic_3_triangulation_filtered_traits_3<K_, Off_, false>
   : public Periodic_3_triangulation_filtered_traits_base_3<K_, Off_>
 {
   typedef Periodic_3_triangulation_filtered_traits_base_3<K_, Off_> Base;
+  typedef Periodic_3_triangulation_filtered_traits_3<K_, Off_, false> Self;
 
 public:
   typedef K_                                                        Kernel;
   typedef typename Kernel::Iso_cuboid_3                             Iso_cuboid_3;
 
-  Periodic_3_triangulation_filtered_traits_3& operator=(const Periodic_3_triangulation_filtered_traits_3&) = delete;
+  Periodic_3_triangulation_filtered_traits_3& operator=(const Self&) = delete;
 
-  Periodic_3_triangulation_filtered_traits_3(const& Periodic_3_triangulation_filtered_traits_3) = delete;
+  Periodic_3_triangulation_filtered_traits_3(const& Self) = delete;
 
   Periodic_3_triangulation_filtered_traits_3(const Iso_cuboid_3& domain,
                                              const Kernel& k)