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 dce0ddf2d9c..88f71afc379 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
@@ -81,7 +81,9 @@ public:
   typedef typename Kernel::Iso_cuboid_3                         Iso_cuboid_3;
 
   virtual ~Periodic_3_triangulation_filtered_traits_base_3() { }
+
   Periodic_3_triangulation_filtered_traits_base_3(const& Periodic_3_triangulation_filtered_traits_base_3) = delete;
+
   Periodic_3_triangulation_filtered_traits_base_3(const Iso_cuboid_3& domain,
                                                   const Kernel& k)
     :
@@ -166,7 +168,9 @@ public:
   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(const& Periodic_3_triangulation_filtered_traits_3) = delete;
+
   Periodic_3_triangulation_filtered_traits_3(const Iso_cuboid_3& domain,
                                              const Kernel& k)
     : Base(domain, k)
@@ -183,11 +187,7 @@ 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& other)
-  { static_cast<Base&>(*this) = other;
-    std::cout << "here" << std::endl;
-    return *this; }
-  Periodic_3_triangulation_filtered_traits_3(const& Periodic_3_triangulation_filtered_traits_3) = delete;
+
   Periodic_3_triangulation_filtered_traits_3(const Iso_cuboid_3& domain,
                                              const Kernel& k)
     : Base(domain, k)
diff --git a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Robust_periodic_weighted_circumcenter_traits_3.h b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Robust_periodic_weighted_circumcenter_traits_3.h
index f1ef12f5517..5fad52049f2 100644
--- a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Robust_periodic_weighted_circumcenter_traits_3.h
+++ b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3/internal/Robust_periodic_weighted_circumcenter_traits_3.h
@@ -279,7 +279,7 @@ public:
   { return Construct_weighted_circumcenter_3(static_cast<const Base_traits&>(*this)); }
 
   Robust_periodic_weighted_circumcenter_traits_3(const Iso_cuboid_3& domain = Iso_cuboid_3(0,0,0,1,1,1),
-                                                 const Base_traits& t = Base_traits() ) // AF
+                                                 const Base_traits& t = Base_traits() )
     : Base_traits(domain, t)
   { }
 };