diff --git a/Polytope_distance_d/doc/Polytope_distance_d/Concepts/AllFurthestNeighborsTraits_2.h b/Polytope_distance_d/doc/Polytope_distance_d/Concepts/AllFurthestNeighborsTraits_2.h
index 874782161e7..452ade88fee 100644
--- a/Polytope_distance_d/doc/Polytope_distance_d/Concepts/AllFurthestNeighborsTraits_2.h
+++ b/Polytope_distance_d/doc/Polytope_distance_d/Concepts/AllFurthestNeighborsTraits_2.h
@@ -16,14 +16,10 @@ convex polygon using the function `all_furthest_neighbors_2()`.
 
 \sa `CGAL::all_furthest_neighbors_2()`
 
-\cgalHeading{Notes}
-
-<UL>
-<LI>`AllFurthestNeighborsTraits_2::Less_xy_2` and
+\note  `AllFurthestNeighborsTraits_2::Less_xy_2` and
 `AllFurthestNeighborsTraits_2::Orientation_2` are used for (expensive)
 precondition checking only. Therefore, they need not to be
 specified, in case that precondition checking is disabled.
-</UL>
 
 */
 
diff --git a/Polytope_distance_d/doc/Polytope_distance_d/Concepts/WidthTraits_3.h b/Polytope_distance_d/doc/Polytope_distance_d/Concepts/WidthTraits_3.h
index 5686aec87e1..8699ebd7b32 100644
--- a/Polytope_distance_d/doc/Polytope_distance_d/Concepts/WidthTraits_3.h
+++ b/Polytope_distance_d/doc/Polytope_distance_d/Concepts/WidthTraits_3.h
@@ -24,7 +24,7 @@ class WidthTraits_3 {
 public:
 
 /// \name Types
-/// <I>Notes:</I> If you want to compute the width of a <I>polyhedron</I> then you have to make sure that the point type in the traits class and the point type in the polyhedron class are the same! The same holds for `Traits::Plane_3` and `Polyhedron::Plane_3`.
+/// \note If you want to compute the width of a <I>polyhedron</I> then you have to make sure that the point type in the traits class and the point type in the polyhedron class are the same! The same holds for `Traits::Plane_3` and `Polyhedron::Plane_3`.
 /// @{
 
 /*!