diff --git a/include/boost/context/detail/invoke.hpp b/include/boost/context/detail/invoke.hpp
index 5ec5480..9173cbc 100644
--- a/include/boost/context/detail/invoke.hpp
+++ b/include/boost/context/detail/invoke.hpp
@@ -23,9 +23,6 @@ namespace boost {
 namespace context {
 namespace detail {
 
-#if _MSC_VER > 1800 
-using std::invoke;
-#else
 template< typename Fn, typename ... Args >
 typename std::enable_if<
     std::is_member_pointer< typename std::decay< Fn >::type >::value,
@@ -43,7 +40,6 @@ typename std::enable_if<
 invoke( Fn && fn, Args && ... args) {
     return std::forward< Fn >( fn)( std::forward< Args >( args) ... );
 }
-#endif
 
 }}}