diff --git a/include/msgpack/v1/adaptor/check_container_size_decl.hpp b/include/msgpack/v1/adaptor/check_container_size_decl.hpp
index 99149599e..7d06c4b82 100644
--- a/include/msgpack/v1/adaptor/check_container_size_decl.hpp
+++ b/include/msgpack/v1/adaptor/check_container_size_decl.hpp
@@ -12,7 +12,7 @@
 
 #include "msgpack/versioning.hpp"
 #include <cstdlib>
-#include <stdint.h>
+#include "msgpack/sysdep.h"
 
 namespace msgpack {