diff --git a/include/msgpack/sysdep.h b/include/msgpack/sysdep.h
index 569ae4cd..b430956b 100644
--- a/include/msgpack/sysdep.h
+++ b/include/msgpack/sysdep.h
@@ -10,8 +10,6 @@
 #ifndef MSGPACK_SYSDEP_H
 #define MSGPACK_SYSDEP_H
 
-#include <msgpack/predef.h>
-
 #include <stdlib.h>
 #include <stddef.h>
 
@@ -86,6 +84,10 @@
 
 #endif
 
+#if !defined(MSGPACK_ENDIAN_LITTLE_BYTE) && !defined(MSGPACK_ENDIAN_BIG_BYTE)
+#include <msgpack/predef/other/endian.h>
+#endif // !defined(MSGPACK_ENDIAN_LITTLE_BYTE) && !defined(MSGPACK_ENDIAN_BIG_BYTE)
+
 #if MSGPACK_ENDIAN_LITTLE_BYTE
 
 #   if defined(unix) || defined(__unix) || defined(__APPLE__) || defined(__OpenBSD__)