diff --git a/include/boost/mp11/detail/config.hpp b/include/boost/mp11/detail/config.hpp
index 63c21f4..3b51541 100644
--- a/include/boost/mp11/detail/config.hpp
+++ b/include/boost/mp11/detail/config.hpp
@@ -128,18 +128,8 @@
 #elif BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, < 50000 )
 #  define BOOST_MP11_DEPRECATED(msg) __attribute__((deprecated(msg)))
 #elif BOOST_MP11_CLANG
-# if defined(__has_cpp_attribute)
-// 3.8 warns about [[deprecated]] when in C++11 mode
-// so we only use it on 3.9 and above, detected via [[fallthrough]]
-// can't version check because Apple
-#  if __has_cpp_attribute(deprecated) && __has_cpp_attribute(fallthrough)
-#   define BOOST_MP11_DEPRECATED(msg) [[deprecated(msg)]]
-#  else
-#   define BOOST_MP11_DEPRECATED(msg)
-#  endif
-# else // defined(__has_cpp_attribute)
-#  define BOOST_MP11_DEPRECATED(msg)
-# endif
+// -pedantic warns about [[deprecated]] when in C++11 mode
+#  define BOOST_MP11_DEPRECATED(msg) __attribute__((deprecated(msg)))
 #else
 #  define BOOST_MP11_DEPRECATED(msg) [[deprecated(msg)]]
 #endif