diff --git a/Triangulation_2/doc/Triangulation_2/CGAL/Constrained_triangulation_plus_2.h b/Triangulation_2/doc/Triangulation_2/CGAL/Constrained_triangulation_plus_2.h
index 1a5d4b691f0..34aee28ad9c 100644
--- a/Triangulation_2/doc/Triangulation_2/CGAL/Constrained_triangulation_plus_2.h
+++ b/Triangulation_2/doc/Triangulation_2/CGAL/Constrained_triangulation_plus_2.h
@@ -111,7 +111,7 @@ typedef unspecified_type Subconstraints;
 /*!
 An iterator to visit all the subconstraints of the triangulation and the
 contexts of their enclosing constraints. The order of visit is undefined.
-The value type of this iterator is `std::pair<const Subconstraint, std::list<Context>*>`.
+The value type of this iterator is `const std::pair<const Subconstraint, std::list<Context>*>`.
 */
 typedef unspecified_type Subconstraint_and_contexts_iterator;