diff --git a/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/Utils.h b/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/Utils.h
index 0c2889ecd74..488e48b5d31 100644
--- a/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/Utils.h
+++ b/Arrangement_on_surface_2/demo/Arrangement_on_surface_2/Utils.h
@@ -337,7 +337,6 @@ public:
   typedef typename Kernel::Point_2 Point_2;
   typedef typename Kernel::Segment_2 Segment_2;
   typedef typename Traits::Curve_2 Curve_2;
-  typedef typename Curve_2::const_iterator Curve_const_iterator;
   typedef typename Traits::X_monotone_curve_2 X_monotone_curve_2;
   typedef typename Curve_2::Segment_const_iterator Seg_const_it;