diff --git a/include/boost/type_traits/detail/size_t_trait_def.hpp b/include/boost/type_traits/detail/size_t_trait_def.hpp
index 0ee3ebb..ac7e2f8 100644
--- a/include/boost/type_traits/detail/size_t_trait_def.hpp
+++ b/include/boost/type_traits/detail/size_t_trait_def.hpp
@@ -28,7 +28,6 @@ template< typename T > struct trait \
     : BOOST_TT_AUX_SIZE_T_BASE(C) \
 { \
 public:\
-    BOOST_TT_AUX_SIZE_T_TRAIT_VALUE_DECL(C) \
     BOOST_MPL_AUX_LAMBDA_SUPPORT(1,trait,(T)) \
 }; \
 \
@@ -40,7 +39,6 @@ template<> struct trait<spec> \
     : BOOST_TT_AUX_SIZE_T_BASE(C) \
 { \
 public:\
-    BOOST_TT_AUX_SIZE_T_TRAIT_VALUE_DECL(C) \
     BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(1,trait,(spec)) \
 }; \
 /**/