diff --git a/Surface_mesh_segmentation/include/CGAL/internal/Surface_mesh_segmentation/AABB_traits.h b/Surface_mesh_segmentation/include/CGAL/internal/Surface_mesh_segmentation/AABB_traits.h
index b2e45cf4496..78599e17815 100644
--- a/Surface_mesh_segmentation/include/CGAL/internal/Surface_mesh_segmentation/AABB_traits.h
+++ b/Surface_mesh_segmentation/include/CGAL/internal/Surface_mesh_segmentation/AABB_traits.h
@@ -13,7 +13,10 @@ template<typename GeomTraits, typename AABB_primitive, bool fast_bbox_intersecti
 class AABB_traits_SDF :
   public AABB_traits<GeomTraits, AABB_primitive>
 {
+public:
   typedef AABB_traits<GeomTraits, AABB_primitive> Base_traits;
+  typedef typename Base_traits::Bounding_box Bounding_box;
+  typedef typename Base_traits::Point_3 Point_3;
 
   class Do_intersect
     : public Base_traits::Do_intersect
@@ -65,7 +68,6 @@ class AABB_traits_SDF :
 
   };
 
-public:
   Do_intersect do_intersect_object() {
     return Do_intersect();
   }