diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orientation.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orientation.h
index 0ee5e95fc400..ecb8ddff8c76 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orientation.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orientation.h
@@ -149,7 +149,8 @@ namespace internal{
  * The normal vector to each face is chosen pointing on the side of the face
  * where its sequence of vertices is seen counterclockwise.
  *
- * @pre `CGAL::is_closed(tm)`
+ * @pre `CGAL::is_closed``(tm)`
+ * @pre '\link CGAL::is_closed `CGAL::is_closed(tm)` \endlink
  * @pre `CGAL::is_triangle_mesh(tm)`
  * @pre If `tm` contains several connected components, they are oriented consistently.
  *      In other words, the answer to this predicate would be the same for each