diff --git a/example/hash_value.cpp b/example/hash_value.cpp
index b85abb9..7126716 100644
--- a/example/hash_value.cpp
+++ b/example/hash_value.cpp
@@ -2,9 +2,9 @@
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
+#include <boost/container_hash/hash.hpp>
 #include <boost/describe.hpp>
 #include <boost/mp11.hpp>
-#include <boost/container_hash/hash.hpp>
 #include <boost/variant2/variant.hpp>
 #include <boost/version.hpp>
 #include <vector>