diff --git a/types/traits.hpp b/types/traits.hpp
index 1433392b..606d4b67 100644
--- a/types/traits.hpp
+++ b/types/traits.hpp
@@ -26,7 +26,6 @@ template <typename T> struct is_dereferencable<T*> : std::true_type  { };
 template <typename T> struct is_dereferencable<std::unique_ptr<T>> : std::true_type { };
 template <typename T> struct is_dereferencable<std::shared_ptr<T>> : std::true_type { };
 template <typename T> struct is_dereferencable<std::weak_ptr<T>>   : std::true_type { };
-template <typename T> struct is_dereferencable<std::auto_ptr<T>>   : std::true_type { };
 
 
 template <typename T> struct dereferenced_type {
@@ -41,7 +40,6 @@ template <typename T> struct dereferenced_type {
 template <typename T> struct dereferenced_type<std::unique_ptr<T>> { typedef T type; };
 template <typename T> struct dereferenced_type<std::shared_ptr<T>> { typedef T type; };
 template <typename T> struct dereferenced_type<std::weak_ptr<T>>   { typedef T type; };
-template <typename T> struct dereferenced_type<std::auto_ptr<T>>   { typedef T type; };
 
 
 ///----------------------------------------------------------------------------