diff --git a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_dual_adapter.cpp b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_dual_adapter.cpp
index 8bdee4d02b0..14b2dffee91 100644
--- a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_dual_adapter.cpp
+++ b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_dual_adapter.cpp
@@ -1,7 +1,7 @@
 //! \file examples/Arrangement_on_surface_2/bgl_dual_adapter.cpp
 // Adapting the dual of an arrangement to a BGL graph.
 
-#include <CGAL/basic.h>
+#include <CGAL/config.h>
 
 #include <boost/graph/breadth_first_search.hpp>
 #include <boost/graph/visitors.hpp>
diff --git a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_primal_adapter.cpp b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_primal_adapter.cpp
index 21d995e73b1..ea317557aae 100644
--- a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_primal_adapter.cpp
+++ b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bgl_primal_adapter.cpp
@@ -3,7 +3,7 @@
 
 #include <vector>
 
-#include <CGAL/basic.h>
+#include <CGAL/config.h>
 
 #include <boost/graph/dijkstra_shortest_paths.hpp>