diff --git a/include/boost/config/stdlib/libcpp.hpp b/include/boost/config/stdlib/libcpp.hpp
index 88561b01..07c70433 100644
--- a/include/boost/config/stdlib/libcpp.hpp
+++ b/include/boost/config/stdlib/libcpp.hpp
@@ -27,6 +27,7 @@
 // These appear to be unusable/incomplete so far:
 //
 #  define BOOST_NO_0X_HDR_CHRONO
+#  define BOOST_NO_0X_HDR_FUTURE
 #  define BOOST_NO_0X_HDR_TYPE_TRAITS
 
 // libc++ uses a non-standard messages_base