diff --git a/include/ndnboost/type_traits/detail/size_t_trait_undef.hpp b/include/ndnboost/type_traits/detail/size_t_trait_undef.hpp
index 967fd91..5ab14d9 100644
--- a/include/ndnboost/type_traits/detail/size_t_trait_undef.hpp
+++ b/include/ndnboost/type_traits/detail/size_t_trait_undef.hpp
@@ -11,6 +11,6 @@
 // $Date: 2004-09-02 08:41:37 -0700 (Thu, 02 Sep 2004) $
 // $Revision: 24874 $
 
-#undef BOOST_TT_AUX_SIZE_T_TRAIT_DEF1
-#undef BOOST_TT_AUX_SIZE_T_TRAIT_SPEC1
-#undef BOOST_TT_AUX_SIZE_T_TRAIT_PARTIAL_SPEC1_1
+#undef NDNBOOST_TT_AUX_SIZE_T_TRAIT_DEF1
+#undef NDNBOOST_TT_AUX_SIZE_T_TRAIT_SPEC1
+#undef NDNBOOST_TT_AUX_SIZE_T_TRAIT_PARTIAL_SPEC1_1