diff --git a/include/boost/config.hpp b/include/boost/config.hpp
index 42a87c62..17c5be3a 100644
--- a/include/boost/config.hpp
+++ b/include/boost/config.hpp
@@ -421,6 +421,10 @@
 #   if __MWERKS__ <= 0x2301  // 5.3
 #     define BOOST_NO_POINTER_TO_MEMBER_CONST
 #     define BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS
+#     define BOOST_NO_HASH
+#   endif
+#   if __MWERKS__ >= 0x2400
+#     define BOOST_STD_EXTENSION_NAMESPACE Metrowerks
 #   endif
 #   if __MWERKS__ >= 0x2300
 #     define BOOST_SYSTEM_HAS_STDINT_H
@@ -436,8 +440,6 @@
 #     define BOOST_DECL
 #   endif
 
-#   define BOOST_STD_EXTENSION_NAMESPACE Metrowerks
-
 //  SGI MIPSpro C++ ----------------------------------------------------------//
 
 #elif defined __sgi
@@ -649,3 +651,4 @@ namespace std {
 
 
 
+