diff --git a/Arrangement_on_surface_2/include/CGAL/Arr_spherical_topology_traits_2.h b/Arrangement_on_surface_2/include/CGAL/Arr_spherical_topology_traits_2.h
index 0b860fe1039..14a7a1a9ebe 100644
--- a/Arrangement_on_surface_2/include/CGAL/Arr_spherical_topology_traits_2.h
+++ b/Arrangement_on_surface_2/include/CGAL/Arr_spherical_topology_traits_2.h
@@ -39,6 +39,7 @@
 #include <CGAL/Sweep_line_2/Arr_overlay_traits_2.h>
 #include <CGAL/Sweep_line_2/Arr_overlay_sl_visitor.h>
 #include <CGAL/Sweep_line_2/Arr_batched_pl_sl_visitor.h>
+#include <CGAL/Sweep_line_2/Arr_vert_decomp_sl_visitor.h>
 #include <CGAL/Arr_point_location/Arr_batched_point_location_traits_2.h>
 
 #include <CGAL/Arr_topology_traits/Arr_spherical_construction_helper.h>