diff --git a/Surface_modeling/include/CGAL/Deform_mesh.h b/Surface_modeling/include/CGAL/Deform_mesh.h
index c7f6a243b8e..54664db2b07 100644
--- a/Surface_modeling/include/CGAL/Deform_mesh.h
+++ b/Surface_modeling/include/CGAL/Deform_mesh.h
@@ -321,7 +321,7 @@ public:
   void erase_roi(vertex_descriptor vd)   
   {
     need_preprocess = true;
-    std::vector<vertex_descriptor>::iterator it = std::find(ros.begin(), ros.end(), vd);
+    typename std::vector<vertex_descriptor>::iterator it = std::find(ros.begin(), ros.end(), vd);
     if(vd != ros.end())
     {
       ros.erase(it);
@@ -463,7 +463,7 @@ public:
    */
   void deform(unsigned int iterations, double tolerance)
   {
-    CGAL_precondition(!need_preprocess, "preprocess() need to be called before deforming!");
+    CGAL_precondition(!need_preprocess || !"preprocess() need to be called before deforming!");
 
     // Note: no energy based termination occurs at first iteration
     // because comparing energy of original model (before deformation) and deformed model (deformed_1_iteration)
diff --git a/Surface_modeling/include/CGAL/internal/Surface_modeling/Spokes_and_rims_iterator.h b/Surface_modeling/include/CGAL/internal/Surface_modeling/Spokes_and_rims_iterator.h
index dc89cf99a30..bc728d93e58 100644
--- a/Surface_modeling/include/CGAL/internal/Surface_modeling/Spokes_and_rims_iterator.h
+++ b/Surface_modeling/include/CGAL/internal/Surface_modeling/Spokes_and_rims_iterator.h
@@ -25,7 +25,7 @@ public:
   typedef typename boost::graph_traits<Polyhedron>::edge_descriptor		edge_descriptor; 
 
   Spokes_and_rims_iterator(out_edge_iterator edge_iterator, Polyhedron& polyhedron)
-    : iterator(edge_iterator), descriptor(*edge_iterator), polyhedron(polyhedron), is_current_rim(false)
+    : is_current_rim(false), iterator(edge_iterator), descriptor(*edge_iterator), polyhedron(polyhedron)
   { }
 
   /// descriptor will be assigned to next valid edge, note that iterator might not change