diff --git a/include/boost/config/stdlib/libstdcpp3.hpp b/include/boost/config/stdlib/libstdcpp3.hpp
index 3c4eb66c..7d27b0cc 100644
--- a/include/boost/config/stdlib/libstdcpp3.hpp
+++ b/include/boost/config/stdlib/libstdcpp3.hpp
@@ -128,7 +128,7 @@
 #  define BOOST_LIBSTDCXX_VERSION 40900
 #elif __has_include(<ext/cmath>)
 #  define BOOST_LIBSTDCXX_VERSION 40800
-#elif __has_include(<chrono>)
+#elif __has_include(<scoped_allocator>)
 #  define BOOST_LIBSTDCXX_VERSION 40700
 #elif __has_include(<typeindex>)
 #  define BOOST_LIBSTDCXX_VERSION 40600