diff --git a/include/boost/parser/detail/text/config.hpp b/include/boost/parser/detail/text/config.hpp
index 527746ba..cb5043fc 100644
--- a/include/boost/parser/detail/text/config.hpp
+++ b/include/boost/parser/detail/text/config.hpp
@@ -12,7 +12,7 @@
 #include <iterator>
 
 
-#if !BOOST_PARSER_USE_CONCEPTS// || defined(_MSC_VER)
+#if !BOOST_PARSER_USE_CONCEPTS
 #    define BOOST_PARSER_DETAIL_TEXT_USE_CONCEPTS 0
 #else
 #    define BOOST_PARSER_DETAIL_TEXT_USE_CONCEPTS 1