diff --git a/include/__config b/include/__config
index 8e42abe26..84f17a9f5 100644
--- a/include/__config
+++ b/include/__config
@@ -586,9 +586,6 @@ namespace std {
 #define _LIBCPP_HAS_NO_CONSTEXPR
 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
-#if _MSC_VER <= 1800
-#define _LIBCPP_HAS_NO_UNICODE_CHARS
-#endif
 #define _LIBCPP_HAS_NO_NOEXCEPT
 #define __alignof__ __alignof
 #define _LIBCPP_NORETURN __declspec(noreturn)