diff --git a/hash/test/hash_global_namespace_test.cpp b/hash/test/hash_global_namespace_test.cpp
index 93b6e67..545e8e2 100644
--- a/hash/test/hash_global_namespace_test.cpp
+++ b/hash/test/hash_global_namespace_test.cpp
@@ -44,7 +44,7 @@ namespace boost
 #  ifdef TEST_STD_INCLUDES
 #    include <functional>
 #  else
-#    include <boost/functional/hash/hash.hpp>
+#    include <boost/functional/hash.hpp>
 #  endif
 #endif