diff --git a/BGL/include/CGAL/boost/graph/helpers.h b/BGL/include/CGAL/boost/graph/helpers.h
index 1dce42e7838..062d5244678 100644
--- a/BGL/include/CGAL/boost/graph/helpers.h
+++ b/BGL/include/CGAL/boost/graph/helpers.h
@@ -457,6 +457,9 @@ make_triangle(const P& p0, const P& p1, const P& p2, Graph& g)
   h0 = opposite(h0,g);
   h1 = opposite(h1,g);
   h2 = opposite(h2,g);
+  set_next(h0, h2, g);
+  set_next(h2, h1, g);
+  set_next(h1, h0, g);
   set_target(h0, v0, g);
   set_target(h1, v1, g);
   set_target(h2, v2, g);