diff --git a/include/msgpack/sysdep.h b/include/msgpack/sysdep.h
index 25b2fdd84..84bf1f48e 100644
--- a/include/msgpack/sysdep.h
+++ b/include/msgpack/sysdep.h
@@ -186,4 +186,8 @@
 #  define inline __inline
 #endif
 
+#ifdef __APPLE__
+#  include <TargetConditionals.h>
+#endif
+
 #endif /* msgpack/sysdep.h */