diff --git a/include/ndnboost/type_traits/conversion_traits.hpp b/include/ndnboost/type_traits/conversion_traits.hpp
index 589c617..d3bb165 100644
--- a/include/ndnboost/type_traits/conversion_traits.hpp
+++ b/include/ndnboost/type_traits/conversion_traits.hpp
@@ -9,9 +9,9 @@
 //
 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
 
-#ifndef BOOST_TT_CONVERSION_TRAITS_HPP_INCLUDED
-#define BOOST_TT_CONVERSION_TRAITS_HPP_INCLUDED
+#ifndef NDNBOOST_TT_CONVERSION_TRAITS_HPP_INCLUDED
+#define NDNBOOST_TT_CONVERSION_TRAITS_HPP_INCLUDED
 
 #include <ndnboost/type_traits/is_convertible.hpp>
 
-#endif // BOOST_TT_CONVERSION_TRAITS_HPP_INCLUDED
+#endif // NDNBOOST_TT_CONVERSION_TRAITS_HPP_INCLUDED