diff --git a/include/boost/type_traits/integral_constant.hpp b/include/boost/type_traits/integral_constant.hpp
index 47699be..9a65df3 100644
--- a/include/boost/type_traits/integral_constant.hpp
+++ b/include/boost/type_traits/integral_constant.hpp
@@ -60,7 +60,7 @@ namespace boost{
       operator const mpl::integral_c<T, val>& ()const
       {
          static const char data[sizeof(long)] = { 0 };
-         static const void* pdata = data;
+         const void* const pdata = data;
          return *static_cast<const mpl::integral_c<T, val>*>(pdata);
       }
       BOOST_CONSTEXPR operator T()const { return val; }
@@ -80,7 +80,7 @@ namespace boost{
       operator const mpl::bool_<val>& ()const
       {
          static const char data[sizeof(long)] = { 0 };
-         static const void* pdata = data;
+         const void* const pdata = data;
          return *static_cast<const mpl::bool_<val>*>(pdata);
       }
       BOOST_CONSTEXPR operator bool()const { return val; }