diff --git a/Mesh_3/include/CGAL/Labeled_mesh_domain_3.h b/Mesh_3/include/CGAL/Labeled_mesh_domain_3.h
index 2159c4212ea..bbac45b3ee7 100644
--- a/Mesh_3/include/CGAL/Labeled_mesh_domain_3.h
+++ b/Mesh_3/include/CGAL/Labeled_mesh_domain_3.h
@@ -589,7 +589,7 @@ public:
     auto value_outside_ = choose_parameter(get_parameter(np, internal_np::voxel_value), FT(0));
     FT relative_error_bound_ = choose_parameter(get_parameter(np, internal_np::error_bound), FT(1e-3));
     auto image_values_to_subdomain_indices_ = choose_parameter(get_parameter(np, internal_np::image_subdomain_index), Null_functor());
-    CGAL::Random* p_rng_ = choose_parameter(get_parameter(np, internal_np::rng), (CGAL::Random*)(0));
+    CGAL::Random* p_rng_ = choose_parameter(get_parameter(np, internal_np::rng), nullptr);
     auto null_subdomain_index_ = choose_parameter(get_parameter(np, internal_np::null_subdomain_index_param), Null_functor());
     auto construct_surface_patch_index_ = choose_parameter(get_parameter(np, internal_np::surface_patch_index), Null_functor());
     const CGAL::Image_3& weights_ = choose_parameter(get_parameter_reference(np, internal_np::weights_param), CGAL::Image_3());
@@ -643,7 +643,7 @@ public:
     auto value_outside_ = choose_parameter(get_parameter(np, internal_np::voxel_value), 0);
     FT relative_error_bound_ = choose_parameter(get_parameter(np, internal_np::error_bound), FT(1e-3));
     auto image_values_to_subdomain_indices_ = choose_parameter(get_parameter(np, internal_np::image_subdomain_index), Null_functor());
-    CGAL::Random* p_rng_ = choose_parameter(get_parameter(np, internal_np::rng), (CGAL::Random*)(0));
+    CGAL::Random* p_rng_ = choose_parameter(get_parameter(np, internal_np::rng), nullptr);
     auto null_subdomain_index_ = choose_parameter(get_parameter(np, internal_np::null_subdomain_index_param), Null_functor());
     auto construct_surface_patch_index_ = choose_parameter(get_parameter(np, internal_np::surface_patch_index), Null_functor());
     namespace p = CGAL::parameters;
@@ -776,7 +776,7 @@ public:
     using parameters::get_parameter;
     using parameters::choose_parameter;
     FT relative_error_bound_ = choose_parameter(get_parameter(np, internal_np::error_bound), FT(1e-3));
-    CGAL::Random* p_rng_ = choose_parameter(get_parameter(np, internal_np::rng), (CGAL::Random*)(0));
+    CGAL::Random* p_rng_ = choose_parameter(get_parameter(np, internal_np::rng), nullptr);
     auto null_subdomain_index_ = choose_parameter(get_parameter(np, internal_np::null_subdomain_index_param), Null_functor());
     auto construct_surface_patch_index_ = choose_parameter(get_parameter(np, internal_np::surface_patch_index), Null_functor());
     namespace p = CGAL::parameters;