diff --git a/include/boost/preprocessor/facilities/is_empty.hpp b/include/boost/preprocessor/facilities/is_empty.hpp
index d0403a9..46aadd3 100644
--- a/include/boost/preprocessor/facilities/is_empty.hpp
+++ b/include/boost/preprocessor/facilities/is_empty.hpp
@@ -21,7 +21,6 @@
 #
 # else
 #
-# include <boost/preprocessor/config/config.hpp>
 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() && ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
 # include <boost/preprocessor/tuple/elem.hpp>
 # include <boost/preprocessor/facilities/identity.hpp>