diff --git a/Envelope_2/include/CGAL/Envelope_diagram_1.h b/Envelope_2/include/CGAL/Envelope_diagram_1.h
index 4f7e3868e0a..e027392d407 100644
--- a/Envelope_2/include/CGAL/Envelope_diagram_1.h
+++ b/Envelope_2/include/CGAL/Envelope_diagram_1.h
@@ -385,7 +385,7 @@ public:
   {
     Vertex* v = vertex_alloc.allocate (1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Vertex_allocator>::construct(vertex_alloc, p);
+    std::allocator_traits<Vertex_allocator>::construct(vertex_alloc, v, p);
 #else
     vertex_alloc.construct (v, Vertex(p));
 #endif