diff --git a/include/ndnboost/preprocessor/control/iif.hpp b/include/ndnboost/preprocessor/control/iif.hpp
index b5e33cf..5cc6f22 100644
--- a/include/ndnboost/preprocessor/control/iif.hpp
+++ b/include/ndnboost/preprocessor/control/iif.hpp
@@ -9,26 +9,26 @@
 #
 # /* See http://www.boost.org for most recent version. */
 #
-# ifndef BOOST_PREPROCESSOR_CONTROL_IIF_HPP
-# define BOOST_PREPROCESSOR_CONTROL_IIF_HPP
+# ifndef NDNBOOST_PREPROCESSOR_CONTROL_IIF_HPP
+# define NDNBOOST_PREPROCESSOR_CONTROL_IIF_HPP
 #
 # include <ndnboost/preprocessor/config/config.hpp>
 #
-# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
-#    define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_I(bit, t, f)
+# if ~NDNBOOST_PP_CONFIG_FLAGS() & NDNBOOST_PP_CONFIG_MWCC()
+#    define NDNBOOST_PP_IIF(bit, t, f) NDNBOOST_PP_IIF_I(bit, t, f)
 # else
-#    define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_OO((bit, t, f))
-#    define BOOST_PP_IIF_OO(par) BOOST_PP_IIF_I ## par
+#    define NDNBOOST_PP_IIF(bit, t, f) NDNBOOST_PP_IIF_OO((bit, t, f))
+#    define NDNBOOST_PP_IIF_OO(par) NDNBOOST_PP_IIF_I ## par
 # endif
 #
-# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
-#    define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_ ## bit(t, f)
+# if ~NDNBOOST_PP_CONFIG_FLAGS() & NDNBOOST_PP_CONFIG_MSVC()
+#    define NDNBOOST_PP_IIF_I(bit, t, f) NDNBOOST_PP_IIF_ ## bit(t, f)
 # else
-#    define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_II(BOOST_PP_IIF_ ## bit(t, f))
-#    define BOOST_PP_IIF_II(id) id
+#    define NDNBOOST_PP_IIF_I(bit, t, f) NDNBOOST_PP_IIF_II(NDNBOOST_PP_IIF_ ## bit(t, f))
+#    define NDNBOOST_PP_IIF_II(id) id
 # endif
 #
-# define BOOST_PP_IIF_0(t, f) f
-# define BOOST_PP_IIF_1(t, f) t
+# define NDNBOOST_PP_IIF_0(t, f) f
+# define NDNBOOST_PP_IIF_1(t, f) t
 #
 # endif