diff --git a/include/boost/container_hash/hash.hpp b/include/boost/container_hash/hash.hpp
index 3f62f51..7f11c4b 100644
--- a/include/boost/container_hash/hash.hpp
+++ b/include/boost/container_hash/hash.hpp
@@ -47,13 +47,6 @@
 
 #endif
 
-#if BOOST_WORKAROUND(__GNUC__, < 3) \
-    && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
-#define BOOST_HASH_CHAR_TRAITS string_char_traits
-#else
-#define BOOST_HASH_CHAR_TRAITS char_traits
-#endif
-
 #if defined(_MSC_VER)
 #   define BOOST_FUNCTIONAL_HASH_ROTL32(x, r) _rotl(x,r)
 #else
@@ -228,12 +221,12 @@ namespace boost
 
     template <class Ch, class A>
     std::size_t hash_value(
-        std::basic_string<Ch, std::BOOST_HASH_CHAR_TRAITS<Ch>, A> const&);
+        std::basic_string<Ch, std::char_traits<Ch>, A> const&);
 
 #if BOOST_HASH_HAS_STRING_VIEW
     template <class Ch>
     std::size_t hash_value(
-        std::basic_string_view<Ch, std::BOOST_HASH_CHAR_TRAITS<Ch> > const&);
+        std::basic_string_view<Ch, std::char_traits<Ch> > const&);
 #endif
 
     template <typename T>
@@ -485,7 +478,7 @@ namespace boost
 
     template <class Ch, class A>
     inline std::size_t hash_value(
-        std::basic_string<Ch, std::BOOST_HASH_CHAR_TRAITS<Ch>, A> const& v)
+        std::basic_string<Ch, std::char_traits<Ch>, A> const& v)
     {
         return hash_range(v.begin(), v.end());
     }
@@ -493,7 +486,7 @@ namespace boost
 #if BOOST_HASH_HAS_STRING_VIEW
     template <class Ch>
     inline std::size_t hash_value(
-        std::basic_string_view<Ch, std::BOOST_HASH_CHAR_TRAITS<Ch> > const& v)
+        std::basic_string_view<Ch, std::char_traits<Ch> > const& v)
     {
         return hash_range(v.begin(), v.end());
     }
@@ -699,7 +692,6 @@ namespace boost
     };
 }
 
-#undef BOOST_HASH_CHAR_TRAITS
 #undef BOOST_FUNCTIONAL_HASH_ROTL32
 
 #if defined(BOOST_MSVC)