diff --git a/include/ndnboost/preprocessor/arithmetic/sub.hpp b/include/ndnboost/preprocessor/arithmetic/sub.hpp
index 3384f15..74331f2 100644
--- a/include/ndnboost/preprocessor/arithmetic/sub.hpp
+++ b/include/ndnboost/preprocessor/arithmetic/sub.hpp
@@ -11,40 +11,40 @@
 #
 # /* See http://www.boost.org for most recent version. */
 #
-# ifndef BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP
-# define BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP
+# ifndef NDNBOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP
+# define NDNBOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP
 #
 # include <ndnboost/preprocessor/arithmetic/dec.hpp>
 # include <ndnboost/preprocessor/config/config.hpp>
 # include <ndnboost/preprocessor/control/while.hpp>
 # include <ndnboost/preprocessor/tuple/elem.hpp>
 #
-# /* BOOST_PP_SUB */
+# /* NDNBOOST_PP_SUB */
 #
-# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
-#    define BOOST_PP_SUB(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+# if ~NDNBOOST_PP_CONFIG_FLAGS() & NDNBOOST_PP_CONFIG_EDG()
+#    define NDNBOOST_PP_SUB(x, y) NDNBOOST_PP_TUPLE_ELEM(2, 0, NDNBOOST_PP_WHILE(NDNBOOST_PP_SUB_P, NDNBOOST_PP_SUB_O, (x, y)))
 # else
-#    define BOOST_PP_SUB(x, y) BOOST_PP_SUB_I(x, y)
-#    define BOOST_PP_SUB_I(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+#    define NDNBOOST_PP_SUB(x, y) NDNBOOST_PP_SUB_I(x, y)
+#    define NDNBOOST_PP_SUB_I(x, y) NDNBOOST_PP_TUPLE_ELEM(2, 0, NDNBOOST_PP_WHILE(NDNBOOST_PP_SUB_P, NDNBOOST_PP_SUB_O, (x, y)))
 # endif
 #
-# define BOOST_PP_SUB_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy)
+# define NDNBOOST_PP_SUB_P(d, xy) NDNBOOST_PP_TUPLE_ELEM(2, 1, xy)
 #
-# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
-#    define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I xy
+# if ~NDNBOOST_PP_CONFIG_FLAGS() & NDNBOOST_PP_CONFIG_MWCC()
+#    define NDNBOOST_PP_SUB_O(d, xy) NDNBOOST_PP_SUB_O_I xy
 # else
-#    define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I(BOOST_PP_TUPLE_ELEM(2, 0, xy), BOOST_PP_TUPLE_ELEM(2, 1, xy))
+#    define NDNBOOST_PP_SUB_O(d, xy) NDNBOOST_PP_SUB_O_I(NDNBOOST_PP_TUPLE_ELEM(2, 0, xy), NDNBOOST_PP_TUPLE_ELEM(2, 1, xy))
 # endif
 #
-# define BOOST_PP_SUB_O_I(x, y) (BOOST_PP_DEC(x), BOOST_PP_DEC(y))
+# define NDNBOOST_PP_SUB_O_I(x, y) (NDNBOOST_PP_DEC(x), NDNBOOST_PP_DEC(y))
 #
-# /* BOOST_PP_SUB_D */
+# /* NDNBOOST_PP_SUB_D */
 #
-# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
-#    define BOOST_PP_SUB_D(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+# if ~NDNBOOST_PP_CONFIG_FLAGS() & NDNBOOST_PP_CONFIG_EDG()
+#    define NDNBOOST_PP_SUB_D(d, x, y) NDNBOOST_PP_TUPLE_ELEM(2, 0, NDNBOOST_PP_WHILE_ ## d(NDNBOOST_PP_SUB_P, NDNBOOST_PP_SUB_O, (x, y)))
 # else
-#    define BOOST_PP_SUB_D(d, x, y) BOOST_PP_SUB_D_I(d, x, y)
-#    define BOOST_PP_SUB_D_I(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+#    define NDNBOOST_PP_SUB_D(d, x, y) NDNBOOST_PP_SUB_D_I(d, x, y)
+#    define NDNBOOST_PP_SUB_D_I(d, x, y) NDNBOOST_PP_TUPLE_ELEM(2, 0, NDNBOOST_PP_WHILE_ ## d(NDNBOOST_PP_SUB_P, NDNBOOST_PP_SUB_O, (x, y)))
 # endif
 #
 # endif