// Jansson is free software; you can redistribute it and/or modify
// it under the terms of the MIT license. See LICENSE for details.
-#if !defined(IN_JANSSON_HPP)
-#error "jansson-impl.hpp may only by included from jansson.hpp"
+#ifndef IN_JANSSON_HPP
+#error "jansson.ipp may only be included from jansson.hpp"
#endif
namespace json {