diff --git a/doc/keywords.txt b/doc/keywords.txt
index df655d9..384c424 100644
--- a/doc/keywords.txt
+++ b/doc/keywords.txt
@@ -38,6 +38,7 @@ BOOST_PP_LIST_FIRST_N
 BOOST_PP_LIST_FOLD_LEFT
 BOOST_PP_LIST_FOLD_RIGHT
 BOOST_PP_LIST_FOR_EACH
+BOOST_PP_LIST_FOR_EACH_PRODUCT
 BOOST_PP_LIST_IS_CONS
 BOOST_PP_LIST_IS_NIL
 BOOST_PP_LIST_NIL