diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/remesh_impl.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/remesh_impl.h
index a8d2e7553b2..e6caa55878e 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/remesh_impl.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Isotropic_remeshing/remesh_impl.h
@@ -323,7 +323,7 @@ namespace internal {
       remove(halfedge_status_pmap_, mesh_);
 
       if (build_tree_){
-        for(int i=0; i < trees.size();++i){
+        for(std::size_t i=0; i < trees.size();++i){
           delete trees[i];
         }
       }
@@ -361,7 +361,7 @@ namespace internal {
       if (!build_tree_)
         return;
       trees.resize(patch_id_to_index_map.size());
-      for(int i=0; i < trees.size(); ++i){
+      for(std::size_t i=0; i < trees.size(); ++i){
         trees[i] = new AABB_tree();
       }
       typename Triangle_list::iterator it;
@@ -371,7 +371,7 @@ namespace internal {
           ++it, ++pit){
         trees[patch_id_to_index_map[*pit]]->insert(it);
       }
-      for(int i=0; i < trees.size(); ++i){
+      for(std::size_t i=0; i < trees.size(); ++i){
         trees[i]->build();
         trees[i]->accelerate_distance_queries();
       }
diff --git a/Polyhedron/include/CGAL/boost/graph/properties_Polyhedron_3.h b/Polyhedron/include/CGAL/boost/graph/properties_Polyhedron_3.h
index 40dc504607f..5cca8f78973 100644
--- a/Polyhedron/include/CGAL/boost/graph/properties_Polyhedron_3.h
+++ b/Polyhedron/include/CGAL/boost/graph/properties_Polyhedron_3.h
@@ -80,9 +80,9 @@ struct Dynamic_polyhedron_property_map {
   }
 
 
-  V default_value_;
   typedef boost::unordered_map<K,V> Map;
   boost::shared_ptr<Map> map_;
+  V default_value_;
 };
 
 template<class Handle>
@@ -594,7 +594,7 @@ add(boost::edge_property_t<V> vprop, Polyhedron_3<Gt, I, HDS, A>& poly)
 
 template<class Gt, class I, CGAL_HDS_PARAM_, class A, class V>
 typename boost::property_map<Polyhedron_3<Gt, I, HDS, A>, boost::halfedge_property_t<V> >::const_type
-add(boost::halfedge_property_t<V> vprop, Polyhedron_3<Gt, I, HDS, A>& poly)
+add(boost::halfedge_property_t<V> vprop, Polyhedron_3<Gt, I, HDS, A>&)
 {
   typedef CGAL::Polyhedron_3<Gt, I, HDS, A> SM;
   typedef typename boost::graph_traits<SM>::halfedge_descriptor halfedge_descriptor;
@@ -603,7 +603,7 @@ add(boost::halfedge_property_t<V> vprop, Polyhedron_3<Gt, I, HDS, A>& poly)
 
 template<class Gt, class I, CGAL_HDS_PARAM_, class A, class V>
 typename boost::property_map<Polyhedron_3<Gt, I, HDS, A>, boost::face_property_t<V> >::const_type
-add(boost::face_property_t<V> vprop, Polyhedron_3<Gt, I, HDS, A>& poly)
+add(boost::face_property_t<V> vprop, Polyhedron_3<Gt, I, HDS, A>&)
 {
   typedef CGAL::Polyhedron_3<Gt, I, HDS, A> SM;
   typedef typename boost::graph_traits<SM>::face_descriptor face_descriptor;