diff --git a/include/boost/config/detail/suffix.hpp b/include/boost/config/detail/suffix.hpp
index 2550239c..86f6081e 100644
--- a/include/boost/config/detail/suffix.hpp
+++ b/include/boost/config/detail/suffix.hpp
@@ -999,7 +999,7 @@ namespace std{ using ::type_info; }
 #if __has_cpp_attribute(nodiscard)
 # define BOOST_ATTRIBUTE_NODISCARD [[nodiscard]]
 #endif
-#if __has_cpp_attribute(no_unique_address)
+#if __has_cpp_attribute(no_unique_address) && !(defined(__GNUC__) && (__cplusplus < 201100))
 # define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS [[no_unique_address]]
 #endif
 #endif