diff --git a/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt b/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt
index f9b033d41ae..bb760b9db82 100644
--- a/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt
+++ b/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt
@@ -23,7 +23,7 @@ intersection predicates, and point containment predicates.
 
 Ordinary Boolean set-operations, which distinguish between the
 interior and the boundary of a polygon, are not implemented within this
-package. The Chapter \ref chapnef_2 "2D Nef Polygons" supports these operations for (linear)
+package. The Chapter \ref PkgNef2Summary supports these operations for (linear)
 polygons.
 
 In the rest of this chapter we use, unless otherwise stated, the
@@ -580,8 +580,8 @@ you intend to obtain the underlying internal arrangement and process it further.
 
 An instantiated
 `General_polygon_set_2` class defines the nested types 
-`General_polygon_set_2<Traits,Dcel>::Polygon_2` and
-`General_polygon_set_2<Traits,Dcel>::Polygon_with_holes_2`, which model
+`General_polygon_set_2<Traits,Dcel>::%Polygon_2` and
+`General_polygon_set_2<Traits,Dcel>::%Polygon_with_holes_2`, which model
 the concepts `GeneralPolygon_2` and
 `GeneralPolygonWithHoles_2` respectively.
 
diff --git a/Boolean_set_operations_2/doc/Boolean_set_operations_2/Concepts/GeneralPolygonWithHoles_2.h b/Boolean_set_operations_2/doc/Boolean_set_operations_2/Concepts/GeneralPolygonWithHoles_2.h
index 04f2911f88d..a5009db20f8 100644
--- a/Boolean_set_operations_2/doc/Boolean_set_operations_2/Concepts/GeneralPolygonWithHoles_2.h
+++ b/Boolean_set_operations_2/doc/Boolean_set_operations_2/Concepts/GeneralPolygonWithHoles_2.h
@@ -12,8 +12,8 @@ the holes.
 
 \cgalHasModel `CGAL::General_polygon_with_holes_2<General_polygon>`
 \cgalHasModel `CGAL::Polygon_with_holes_2<Kernel,Container>`
-\cgalHasModel `CGAL::Gps_circle_segment_traits_2<Kernel>::Polygon_with_holes_2`
-\cgalHasModel `CGAL::Gps_traits_2<ArrTraits,GeneralPolygon>::Polygon_with_holes_2` 
+\cgalHasModel `CGAL::Gps_circle_segment_traits_2<Kernel>::%Polygon_with_holes_2`
+\cgalHasModel `CGAL::Gps_traits_2<ArrTraits,GeneralPolygon>::%Polygon_with_holes_2` 
 
 */