diff --git a/include/sqlpp11/consistent.h b/include/sqlpp11/consistent.h
index 6baa2452..f60edd0e 100644
--- a/include/sqlpp11/consistent.h
+++ b/include/sqlpp11/consistent.h
@@ -33,9 +33,6 @@ namespace sqlpp
 {
   struct consistent_t : std::true_type
   {
-    static constexpr bool value = true;
-    using type = std::true_type;
-
     static void _(){};
   };
 }
diff --git a/include/sqlpp11/portable_static_assert.h b/include/sqlpp11/portable_static_assert.h
index 6574fc56..6b895a2c 100644
--- a/include/sqlpp11/portable_static_assert.h
+++ b/include/sqlpp11/portable_static_assert.h
@@ -32,8 +32,6 @@ namespace sqlpp
 #define SQLPP_PORTABLE_STATIC_ASSERT(name, message) \
   struct name : std::false_type                     \
   {                                                 \
-    using type = std::false_type;                   \
-                                                    \
     template <typename T = void>                    \
     static void _()                                 \
     {                                               \