diff --git a/Intersections_3/include/CGAL/Triangle_3_Tetrahedron_3_do_intersect.h b/Intersections_3/include/CGAL/Triangle_3_Tetrahedron_3_do_intersect.h
index f5ee6802f7a..0984a2fac87 100644
--- a/Intersections_3/include/CGAL/Triangle_3_Tetrahedron_3_do_intersect.h
+++ b/Intersections_3/include/CGAL/Triangle_3_Tetrahedron_3_do_intersect.h
@@ -39,7 +39,7 @@ namespace internal {
 // This code is not optimized:
   template <class K, class Bounded>
 typename K::Boolean
-do_intersect_tetrahedron_bounded(const typename Bounded &tr,
+do_intersect_tetrahedron_bounded(const Bounded &tr,
                                  const typename K::Tetrahedron_3 &tet,
                                  const typename K::Point_3 p,
                                  const K & k)
diff --git a/Intersections_3/include/CGAL/internal/Intersections_3/Tetrahedron_3_do_intersect.h b/Intersections_3/include/CGAL/internal/Intersections_3/Tetrahedron_3_do_intersect.h
index b735b3d2346..8197777a842 100644
--- a/Intersections_3/include/CGAL/internal/Intersections_3/Tetrahedron_3_do_intersect.h
+++ b/Intersections_3/include/CGAL/internal/Intersections_3/Tetrahedron_3_do_intersect.h
@@ -113,4 +113,4 @@ bool do_intersect(const CGAL::Ray_3<K>& b,
 
 } // namespace CGAL
 
-#endif CGAL_INTERNAL_INTERSECTIONS_3_TETRAHEDRON_3_DO_INTERSECT_H
+#endif // CGAL_INTERNAL_INTERSECTIONS_3_TETRAHEDRON_3_DO_INTERSECT_H
diff --git a/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Sphere_3_do_intersect.h b/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Sphere_3_do_intersect.h
index 8c129fa07a4..4ae4cf82c9c 100644
--- a/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Sphere_3_do_intersect.h
+++ b/Intersections_3/include/CGAL/internal/Intersections_3/Triangle_3_Sphere_3_do_intersect.h
@@ -121,5 +121,5 @@ CGAL_DO_INTERSECT_FUNCTION(Segment_3, Sphere_3, 3)
 
 } // namespace CGAL
 
-#endif CGAL_TRIANGLE_3_SPHERE_3_DO_INTERSECT_H
+#endif // CGAL_TRIANGLE_3_SPHERE_3_DO_INTERSECT_H