diff --git a/BGL/include/CGAL/boost/graph/named_params_helper.h b/BGL/include/CGAL/boost/graph/named_params_helper.h
index 22e6819beb5..2e57a80fa57 100644
--- a/BGL/include/CGAL/boost/graph/named_params_helper.h
+++ b/BGL/include/CGAL/boost/graph/named_params_helper.h
@@ -225,7 +225,7 @@ namespace CGAL {
   //struct Default_face_index_map
   //struct Default_vertex_index_map
   //struct Default_halfedge_index_map
-#define CGAL_DEF_MAP_TYPE(TYPE)                                    \
+#define CGAL_DEF_MAP_TYPE(TYPE)                               \
   template<typename NP, typename TM>                          \
   struct Default_##TYPE##_index_map{                          \
   typedef typename boost::mpl::if_c<                          \
@@ -234,7 +234,7 @@ namespace CGAL {
   , CGAL::dynamic_##TYPE##_property_t<int>                    \
   >::type Final_tag;                                          \
   typedef typename internal_np::Lookup_named_param_def<       \
-  internal_np::TYPE##_index_t,                                  \
+  internal_np::TYPE##_index_t,                                \
   NP,                                                         \
   typename boost::property_map<TM, Final_tag >::const_type    \
   > ::type  type;                                             \
diff --git a/BGL/include/CGAL/boost/graph/properties_Seam_mesh.h b/BGL/include/CGAL/boost/graph/properties_Seam_mesh.h
index 96bf18fa8ab..53acfbce101 100644
--- a/BGL/include/CGAL/boost/graph/properties_Seam_mesh.h
+++ b/BGL/include/CGAL/boost/graph/properties_Seam_mesh.h
@@ -112,6 +112,39 @@ struct property_map<CGAL::Seam_mesh<TM, SEM, SVM>, CGAL::vertex_point_t>
   typedef CGAL::Seam_mesh_point_map<TM, SEM, SVM>        type;
   typedef type                                           const_type;
 };
+
+template <class TM, class SEM, class SVM, typename T>
+struct property_map<CGAL::Seam_mesh<TM, SEM, SVM>, CGAL::dynamic_vertex_property_t<T> >
+{
+  typedef typename boost::graph_traits<CGAL::Seam_mesh<TM, SEM, SVM> >::vertex_descriptor vertex_descriptor;
+  typedef CGAL::internal::Dynamic_property_map<vertex_descriptor,T> type;
+  typedef type const_type;
+};
+
+template <class TM, class SEM, class SVM, typename T>
+struct property_map<CGAL::Seam_mesh<TM, SEM, SVM>, CGAL::dynamic_halfedge_property_t<T> >
+{
+  typedef typename boost::graph_traits<CGAL::Seam_mesh<TM, SEM, SVM> >::halfedge_descriptor halfedge_descriptor;
+  typedef CGAL::internal::Dynamic_property_map<halfedge_descriptor,T> type;
+  typedef type const_type;
+};
+
+
+template <class TM, class SEM, class SVM, typename T>
+struct property_map<CGAL::Seam_mesh<TM, SEM, SVM>, CGAL::dynamic_edge_property_t<T> >
+{
+  typedef typename boost::graph_traits<CGAL::Seam_mesh<TM, SEM, SVM> >::edge_descriptor edge_descriptor;
+  typedef CGAL::internal::Dynamic_property_map<edge_descriptor,T> type;
+  typedef type const_type;
+};
+
+template <class TM, class SEM, class SVM, typename T>
+struct property_map<CGAL::Seam_mesh<TM, SEM, SVM>, CGAL::dynamic_face_property_t<T> >
+{
+  typedef typename boost::graph_traits<CGAL::Seam_mesh<TM, SEM, SVM> >::face_descriptor face_descriptor;
+  typedef CGAL::internal::Dynamic_property_map<face_descriptor,T> type;
+  typedef type const_type;
+};
 } // namespace boost
 
 namespace CGAL {