diff --git a/Polyhedron/demo/Polyhedron/Plugins/Tetrahedral_remeshing/Tetrahedral_remeshing_plugin.cpp b/Polyhedron/demo/Polyhedron/Plugins/Tetrahedral_remeshing/Tetrahedral_remeshing_plugin.cpp
index 1d8b443a09f..6b4298425f3 100644
--- a/Polyhedron/demo/Polyhedron/Plugins/Tetrahedral_remeshing/Tetrahedral_remeshing_plugin.cpp
+++ b/Polyhedron/demo/Polyhedron/Plugins/Tetrahedral_remeshing/Tetrahedral_remeshing_plugin.cpp
@@ -137,12 +137,13 @@ public Q_SLOTS:
       {
         CGAL::tetrahedral_isotropic_remeshing(
           c3t3_item->c3t3(),
-          ASizing::create_adaptive_sizing_field(c3t3_item->c3t3().triangulation()),
+          ASizing::create_adaptive_sizing_field(c3t3_item->c3t3().triangulation(),
+              CGAL::parameters::edge_is_constrained_map(Constraints_pmap(constraints))),
           CGAL::parameters::remesh_boundaries(!protect)
           .number_of_iterations(nb_iter)
-        .smooth_constrained_edges(smooth_edges)
-        .edge_is_constrained_map(Constraints_pmap(constraints))
-      );
+          .smooth_constrained_edges(smooth_edges)
+          .edge_is_constrained_map(Constraints_pmap(constraints))
+        );
       }
       else
       {
diff --git a/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/Adaptive_remeshing_sizing_field.h b/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/Adaptive_remeshing_sizing_field.h
index 1413ee3ee8f..d06a48df0d8 100644
--- a/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/Adaptive_remeshing_sizing_field.h
+++ b/Tetrahedral_remeshing/include/CGAL/Tetrahedral_remeshing/Adaptive_remeshing_sizing_field.h
@@ -316,7 +316,8 @@ average_edge_length_around(const Vertex_handle v, const Tr& tr,
       std::back_inserter(edges),
       [&ecmap](const Edge& e)
       {
-        return get(ecmap, e);
+        const auto evv = CGAL::Tetrahedral_remeshing::make_vertex_pair(e);
+        return get(ecmap, evv);
       });
     break;