diff --git a/include/boost/type_traits/composite_traits.hpp b/include/boost/type_traits/composite_traits.hpp
index 31ddcff..7da2ad8 100644
--- a/include/boost/type_traits/composite_traits.hpp
+++ b/include/boost/type_traits/composite_traits.hpp
@@ -275,7 +275,7 @@ template <typename T> struct is_enum
 private:
    typedef typename ::boost::add_reference<T>::type r_type;
        
-# if (defined(__MWERKS__) && __MWERKS__ >= 0x3000) || BOOST_MSVC > 1300 || defined(BOOST_NO_COMPILER_CONFIG)
+# if (defined(__MWERKS__) && __MWERKS__ >= 0x3000) || BOOST_MSVC > 1301 || defined(BOOST_NO_COMPILER_CONFIG)
    BOOST_STATIC_CONSTANT(bool, selector =
       (::boost::type_traits::ice_or<
            ::boost::is_arithmetic<T>::value
diff --git a/include/boost/type_traits/is_class.hpp b/include/boost/type_traits/is_class.hpp
index 496a0ca..329c440 100644
--- a/include/boost/type_traits/is_class.hpp
+++ b/include/boost/type_traits/is_class.hpp
@@ -10,7 +10,7 @@
 #ifndef BOOST_TYPE_TRAITS_IS_CLASS_HPP
 # define BOOST_TYPE_TRAITS_IS_CLASS_HPP
 
-# if (defined(__MWERKS__) && __MWERKS__ >= 0x3000) || BOOST_MSVC > 1300 || defined(BOOST_NO_COMPILER_CONFIG)
+# if (defined(__MWERKS__) && __MWERKS__ >= 0x3000) || BOOST_MSVC > 1301 || defined(BOOST_NO_COMPILER_CONFIG)
 # ifndef BOOST_ICE_TYPE_TRAITS_HPP
 #  include <boost/type_traits/ice.hpp>
 # endif