diff --git a/include/boost/type_traits/detail/has_postfix_operator.hpp b/include/boost/type_traits/detail/has_postfix_operator.hpp
index 3e686f1..ba0358f 100644
--- a/include/boost/type_traits/detail/has_postfix_operator.hpp
+++ b/include/boost/type_traits/detail/has_postfix_operator.hpp
@@ -23,7 +23,7 @@
 #   pragma GCC system_header
 #elif defined(BOOST_MSVC)
 #   pragma warning ( push )
-#   pragma warning ( disable : 4244 4913)
+#   pragma warning ( disable : 4244 4913 4800)
 #   if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
 #       pragma warning ( disable : 6334)
 #   endif
diff --git a/include/boost/type_traits/detail/has_prefix_operator.hpp b/include/boost/type_traits/detail/has_prefix_operator.hpp
index d4574fc..f6b8b86 100644
--- a/include/boost/type_traits/detail/has_prefix_operator.hpp
+++ b/include/boost/type_traits/detail/has_prefix_operator.hpp
@@ -31,7 +31,7 @@
 #   pragma GCC system_header
 #elif defined(BOOST_MSVC)
 #   pragma warning ( push )
-#   pragma warning ( disable : 4146 4804 4913 4244)
+#   pragma warning ( disable : 4146 4804 4913 4244 4800)
 #   if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
 #       pragma warning ( disable : 6334)
 #   endif