diff --git a/include/boost/mp11/function.hpp b/include/boost/mp11/function.hpp
index 6def486..8ff66e5 100644
--- a/include/boost/mp11/function.hpp
+++ b/include/boost/mp11/function.hpp
@@ -87,9 +87,9 @@ template<class... T> using mp_and = typename detail::mp_and_impl<mp_list<T...>>:
 #endif
 
 // mp_all<T...>
-#if BOOST_WORKAROUND( BOOST_MSVC, <= 1910 ) || BOOST_WORKAROUND( BOOST_GCC, < 70000 )
+#if BOOST_WORKAROUND( BOOST_MSVC, <= 1910 ) || BOOST_WORKAROUND( BOOST_GCC, < 70200 )
 
-template<class... T> using mp_all = mp_bool< mp_count_if< mp_list<T...>, mp_to_bool >::value == sizeof...(T) >;
+template<class... T> using mp_all = mp_bool< mp_count_if< mp_list<T...>, mp_not >::value == 0 >;
 
 #elif defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS )
 
@@ -132,7 +132,7 @@ template<class T1, class... T> struct mp_or_impl<T1, T...>
 } // namespace detail
 
 // mp_any<T...>
-#if defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS ) && !BOOST_WORKAROUND( BOOST_GCC, < 70000 )
+#if defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS ) && !BOOST_WORKAROUND( BOOST_GCC, < 70200 )
 
 template<class... T> using mp_any = mp_bool<(static_cast<bool>(T::value) || ...)>;