diff --git a/Min_sphere_of_spheres_d/test/Min_sphere_of_spheres_d/min_sphere_of_points.cpp b/Min_sphere_of_spheres_d/test/Min_sphere_of_spheres_d/min_sphere_of_points.cpp
index d7b25eba33d..364b070dfbf 100644
--- a/Min_sphere_of_spheres_d/test/Min_sphere_of_spheres_d/min_sphere_of_points.cpp
+++ b/Min_sphere_of_spheres_d/test/Min_sphere_of_spheres_d/min_sphere_of_points.cpp
@@ -1,6 +1,5 @@
 #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
 #include <CGAL/Cartesian_d.h>
-#include <CGAL/Gmpq.h>
 
 #include <CGAL/Min_sphere_of_spheres_d.h>
 #include <CGAL/Min_sphere_of_points_d_traits_2.h>
@@ -9,14 +8,14 @@
 
 
 typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
-typedef CGAL::Cartesian_d<CGAL::Gmpq>             K_d;
+typedef CGAL::Cartesian_d<double>             K_d;
 typedef K::Point_2 Point_2;
 typedef K::Point_3 Point_3;
 typedef K_d::Point_d Point_d;
 
 typedef CGAL::Min_sphere_of_points_d_traits_2<K,double> Traits_2;
 typedef CGAL::Min_sphere_of_points_d_traits_3<K,double> Traits_3;
-typedef CGAL::Min_sphere_of_points_d_traits_d<K_d,CGAL::Gmpq,3> Traits_d;
+typedef CGAL::Min_sphere_of_points_d_traits_d<K_d,double,3> Traits_d;
 typedef CGAL::Min_sphere_of_spheres_d<Traits_2> Min_sphere_2;
 typedef CGAL::Min_sphere_of_spheres_d<Traits_3> Min_sphere_3;
 typedef CGAL::Min_sphere_of_spheres_d<Traits_d> Min_sphere_d;
@@ -38,9 +37,6 @@ int main()
     Min_sphere_3 ms(points, points+3);
     std::cerr << "3D min sphere computed with Exact_predicates_inexact_constructions_kernel" << std::endl;
     Min_sphere_3::Cartesian_const_iterator coord = ms.center_cartesian_begin();
-
-      std::cerr << typeid(coord).name() << std::endl;
-      std::cerr << typeid(*coord).name() << std::endl;
     double cx = *coord++;
     double cy = *coord++;
     double cz = *coord++;
@@ -49,7 +45,6 @@ int main()
   }
   {
     Point_d points[3]  = { Point_d(0,0,0,1), Point_d(1,0, 0,1), Point_d(1,1,1,1) } ;
-    std::cerr << "here" << std::endl;
     Min_sphere_d ms(points, points+3);
     std::cerr << "3D min sphere computed with Kernel_d" << std::endl;
     int i=0;
@@ -57,17 +52,12 @@ int main()
     for(Min_sphere_d::Cartesian_const_iterator coord = ms.center_cartesian_begin();
         coord != ms.center_cartesian_end();
         ++coord){
-      Min_sphere_d::Result r = *coord;
-      C[i] =  CGAL::to_double(r.first) + CGAL::to_double(r.second)* sqrt(CGAL::to_double(ms.discriminant()));
-      std::cerr << C[i] << std::endl;
-      i++;
+      std::cerr << *coord << std::endl;
+      C[i++] = *coord;
     }
-    
-    Min_sphere_d::Result rr = ms.radius();
-    double r =  CGAL::to_double(rr.first) + CGAL::to_double(rr.second)* sqrt(CGAL::to_double(ms.discriminant()));
+    double r = ms.radius();
     std::cout << C[0] << "  " << C[1] << " "  << C[2] << " " << r << std::endl; 
   }
-  std::cout << "done" << std::endl;
 
   return 0;
 }