diff --git a/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_constructions.h b/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_constructions.h
index 66f01f91132..979bca817f3 100644
--- a/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_constructions.h
+++ b/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_constructions.h
@@ -2616,6 +2616,16 @@ void _test_extremal_points_construct(SK sk) {
 
 }
 
+template <class SK>
+void _test_calls(SK sk) {
+	CGAL::Line_arc_3<SK> la =
+		SK().construct_line_arc_3_object()(CGAL::Point_3<SK>(1,1,1), CGAL::Point_3<SK>(1,2,1));
+	CGAL::Circular_arc_point_3<SK> cap = SK().construct_circular_max_vertex_3_object()(la);
+	cap = SK().construct_circular_min_vertex_3_object()(la);
+	cap = SK().construct_circular_source_vertex_3_object()(la);
+	cap = SK().construct_circular_target_vertex_3_object()(la);
+}
+
 template <class SK>
 void _test_spherical_kernel_construct(SK sk)
 {
@@ -2631,5 +2641,6 @@ void _test_spherical_kernel_construct(SK sk)
   _test_split_construct(sk);
   _test_bounding_box_construct(sk);
   _test_extremal_points_construct(sk);
+	_test_calls(sk);
   std::cout << "All tests on construction are OK." << std::endl;
 }
diff --git a/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_predicates.h b/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_predicates.h
index 3a5fabcdcb1..90dfa312508 100644
--- a/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_predicates.h
+++ b/Circular_kernel_3/test/Circular_kernel_3/include/CGAL/_test_sphere_predicates.h
@@ -649,8 +649,10 @@ void _test_bounded_side(SK sk) {
         CGAL::Bounded_side b = theBounded_side_3(s,cp);
         if((x*x + y*y + z*z) < 25) {
           assert(b == CGAL::ON_BOUNDED_SIDE);
+					assert(SK().has_on_bounded_side_3_object()(s,cp));
         } else if((x*x + y*y + z*z) > 25) {
           assert(b == CGAL::ON_UNBOUNDED_SIDE);
+					assert(SK().has_on_unbounded_side_3_object()(s,cp));
         } else assert(b == CGAL::ON_BOUNDARY);
       }
     }