--- ./include/CGAL/Mesh_2/Do_not_refine_edges.h.ori	2012-04-25 23:14:26.132198961 +0200
+++ ./include/CGAL/Mesh_2/Do_not_refine_edges.h	2012-04-25 23:14:46.304953789 +0200
@@ -80,7 +80,7 @@
       const Face_handle& fh = eit->first;
       const int& i = eit->second;
 
-      if(fh->is_constrained(i) && !is_locally_conform(this->tr, fh, i, p))
+      if(fh->is_constrained(i) && !this->is_locally_conform(this->tr, fh, i, p))
       {
         return CONFLICT_AND_ELEMENT_SHOULD_BE_DROPPED;
       }