diff --git a/include/__config b/include/__config
index 21f7dced0..99de86d89 100644
--- a/include/__config
+++ b/include/__config
@@ -215,7 +215,7 @@
 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
 #endif
 
-#ifndef __GXX_EXPERIMENTAL_CXX0X__
+#ifndef __cplusplus >= 201103L
 #ifdef __linux__
 #define _LIBCPP_HAS_NO_UNICODE_CHARS
 #else