diff --git a/include/boost/config/compiler/clang.hpp b/include/boost/config/compiler/clang.hpp
index 1b7fd926..9f1c2cd1 100644
--- a/include/boost/config/compiler/clang.hpp
+++ b/include/boost/config/compiler/clang.hpp
@@ -44,7 +44,9 @@
 #  define BOOST_NO_DECLTYPE
 #endif
 
-#define BOOST_NO_DECLTYPE_N3276
+#if !__has_feature(__cxx_decltype__)
+#  define BOOST_NO_DECLTYPE_N3276
+#endif
 
 #if !__has_feature(cxx_defaulted_functions)
 #  define BOOST_NO_DEFAULTED_FUNCTIONS