diff --git a/Filtered_kernel/include/CGAL/Lazy.h b/Filtered_kernel/include/CGAL/Lazy.h
index 7570d0c706f..071a6f57241 100644
--- a/Filtered_kernel/include/CGAL/Lazy.h
+++ b/Filtered_kernel/include/CGAL/Lazy.h
@@ -1004,7 +1004,7 @@ struct Lazy_construction_bbox
 
 
 template <typename LK, typename AC, typename EC>
-struct Lazy_construction_optional_for_polygonal_envelope
+struct Lazy_construction_optional_for_polyhedral_envelope
 {
   static const bool Protection = true;
   typedef typename LK::Approximate_kernel AK;
diff --git a/Filtered_kernel/include/CGAL/Lazy_kernel.h b/Filtered_kernel/include/CGAL/Lazy_kernel.h
index 08a6ebb41a0..0cf7f4f2596 100644
--- a/Filtered_kernel/include/CGAL/Lazy_kernel.h
+++ b/Filtered_kernel/include/CGAL/Lazy_kernel.h
@@ -258,7 +258,7 @@ private:
   template <typename Construction>
   struct Select_wrapper_impl<Construction, OPTIONAL_> {
     template<typename Kernel, typename AKC, typename EKC>
-    struct apply { typedef Lazy_construction_optional_for_polygonal_envelope<Kernel, AKC, EKC> type; };
+    struct apply { typedef Lazy_construction_optional_for_polyhedral_envelope<Kernel, AKC, EKC> type; };
   };
 
   template <typename Construction>