diff --git a/include/boost/preprocessor/seq/fold_left.hpp b/include/boost/preprocessor/seq/fold_left.hpp
index cf51f15..b249816 100644
--- a/include/boost/preprocessor/seq/fold_left.hpp
+++ b/include/boost/preprocessor/seq/fold_left.hpp
@@ -38,7 +38,8 @@
 # error Incorrect value for the BOOST_PP_LIMIT_SEQ limit
 # endif
 #
-# define BOOST_PP_SEQ_FOLD_LEFT_P(n) BOOST_PP_CAT(BOOST_PP_SEQ_FOLD_LEFT_CHECK_, BOOST_PP_SEQ_FOLD_LEFT_I_ ## n(BOOST_PP_SEQ_FOLD_LEFT_O, BOOST_PP_NIL, (nil), 1))
+# define BOOST_PP_SEQ_FOLD_LEFT_P(n) BOOST_PP_SEQ_FOLD_LEFT_P_DEC(BOOST_PP_DEC(n))
+# define BOOST_PP_SEQ_FOLD_LEFT_P_DEC(n) BOOST_PP_CAT(BOOST_PP_SEQ_FOLD_LEFT_CHECK_, BOOST_PP_CAT(BOOST_PP_SEQ_FOLD_LEFT_I_,n)(BOOST_PP_SEQ_FOLD_LEFT_O, BOOST_PP_NIL, (nil), 1))
 # define BOOST_PP_SEQ_FOLD_LEFT_O(s, st, _) st
 #
 # if BOOST_PP_LIMIT_SEQ == 256