diff --git a/include/boost/mp11/detail/config.hpp b/include/boost/mp11/detail/config.hpp
index 47cc3ba..69539aa 100644
--- a/include/boost/mp11/detail/config.hpp
+++ b/include/boost/mp11/detail/config.hpp
@@ -15,7 +15,7 @@
 
 #  define BOOST_MP11_NO_CONSTEXPR
 
-#elif defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1900 )
+#elif defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1910 )
 
 #  define BOOST_MP11_NO_CONSTEXPR
 
diff --git a/include/boost/mp11/detail/mp_count.hpp b/include/boost/mp11/detail/mp_count.hpp
index 8a6ada5..782e5c6 100644
--- a/include/boost/mp11/detail/mp_count.hpp
+++ b/include/boost/mp11/detail/mp_count.hpp
@@ -69,7 +69,7 @@ template<template<class...> class L, class... T, template<class...> class P> str
 
 template<template<class...> class L, class... T, template<class...> class P> struct mp_count_if_impl<L<T...>, P>
 {
-#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1900 )
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1910 )
 
     template<class T> struct _f { using type = mp_to_bool<P<T>>; };
     using type = mp_size_t<mp_plus<typename _f<T>::type...>::value>;