diff --git a/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h b/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h
index 9d5029274a7..514c62d4d24 100644
--- a/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h
+++ b/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h
@@ -34,7 +34,7 @@ class PointC2
 {
   typedef PointC2<R_>                       Self;
   typedef typename R_::FT                   FT;
-// http://www.cgal.org/Members/Manual_test/LAST/Developers_internal_manual/Developers_manual/Chapter_code_format.html#sec:programming_conventions
+// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::Vector_2             Vector_2_;
   typedef typename R_::Point_2              Point_2;
 
diff --git a/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h b/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h
index cff0d0d4709..b76a549163c 100644
--- a/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h
+++ b/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h
@@ -36,7 +36,7 @@ template <class R_>
 class SphereC3
 {
   typedef typename R_::FT                   FT;
-// http://www.cgal.org/Members/Manual_test/LAST/Developers_internal_manual/Developers_manual/Chapter_code_format.html#sec:programming_conventions
+// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::Point_3              Point_3_;
   typedef typename R_::Vector_3             Vector_3;
   typedef typename R_::Sphere_3             Sphere_3;
diff --git a/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h b/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h
index 8257a3b2d0b..1580d3db74a 100644
--- a/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h
+++ b/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h
@@ -34,7 +34,7 @@ namespace CGAL {
 template < class R_ >
 class VectorC3
 {
-// http://www.cgal.org/Members/Manual_test/LAST/Developers_internal_manual/Developers_manual/Chapter_code_format.html#sec:programming_conventions
+// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::FT                   FT_;
   typedef typename R_::Point_3              Point_3;
   typedef typename R_::Vector_3             Vector_3;
diff --git a/Kernel_23/include/CGAL/Sphere_3.h b/Kernel_23/include/CGAL/Sphere_3.h
index 436d580ffc1..d708093abd3 100644
--- a/Kernel_23/include/CGAL/Sphere_3.h
+++ b/Kernel_23/include/CGAL/Sphere_3.h
@@ -38,7 +38,7 @@ template <class R_>
 class Sphere_3 : public R_::Kernel_base::Sphere_3
 {
   typedef typename R_::FT                    FT;
-// http://www.cgal.org/Members/Manual_test/LAST/Developers_internal_manual/Developers_manual/Chapter_code_format.html#sec:programming_conventions
+// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::Point_3               Point_3_;
   typedef typename R_::Circle_3              Circle_3;
   typedef typename R_::Aff_transformation_3  Aff_transformation_3;
diff --git a/Kernel_23/include/CGAL/Vector_3.h b/Kernel_23/include/CGAL/Vector_3.h
index e76e0a46844..973dcdbd213 100644
--- a/Kernel_23/include/CGAL/Vector_3.h
+++ b/Kernel_23/include/CGAL/Vector_3.h
@@ -39,7 +39,7 @@ template <class R_>
 class Vector_3 : public R_::Kernel_base::Vector_3
 {
   typedef typename R_::RT                    RT;
-// http://www.cgal.org/Members/Manual_test/LAST/Developers_internal_manual/Developers_manual/Chapter_code_format.html#sec:programming_conventions
+// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::FT                    FT_;
   typedef typename R_::Segment_3             Segment_3;
   typedef typename R_::Ray_3                 Ray_3;