diff --git a/src/msgpack.h b/src/msgpack.h
index 08f27688..40cc3e9f 100644
--- a/src/msgpack.h
+++ b/src/msgpack.h
@@ -20,6 +20,19 @@
  * @{
  * @}
  */
+#if !defined(__cplusplus) && defined(_MSC_VER)
+#if !defined(FALSE)
+#define FALSE (0)
+#endif
+#if !defined(TRUE)
+#define TRUE (!FALSE)
+#endif
+#define bool int
+#define true TRUE
+#define false FALSE
+#define inline __inline
+#endif
+
 #include "msgpack/object.h"
 #include "msgpack/zone.h"
 #include "msgpack/pack.h"