diff --git a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/rational_functions.cpp b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/rational_functions.cpp
index 006a5dce892..d3a02d1228e 100644
--- a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/rational_functions.cpp
+++ b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/rational_functions.cpp
@@ -1,11 +1,9 @@
 //! \file examples/Arrangement_2/ex_rational_functions.cpp
 // Constructing an arrangement of arcs of rational functions.
-#include "stdafx.h"
 
 #include <CGAL/basic.h>
 
 #include <CGAL/CORE_BigInt.h>                      //NT
-//#include <CGAL/CORE_BigRat.h>                      //NT
 #include <CGAL/Algebraic_kernel_d_1.h>             //Algebraic Kernel
 #include <CGAL/Arr_rational_function_traits_2.h>   //Traits
 #include <CGAL/Arrangement_2.h>                    //Arrangement