diff --git include/msgpack/v1/vrefbuffer.hpp include/msgpack/v1/vrefbuffer.hpp
--- include/msgpack/v1/vrefbuffer.hpp
+++ include/msgpack/v1/vrefbuffer.hpp
@@ -25,7 +25,22 @@
-#if defined(unix) || defined(__unix) || defined(__APPLE__) || defined(__OpenBSD__)
+#if defined(unix) || defined(__unix) || defined(__APPLE__) || defined(__OpenBSD__) || defined(__unix__)
 #include <sys/uio.h>
 #else
+#ifdef _WIN32
+#ifndef _WS2DEF_
+#include <Winsock2.h>
+#endif
+#ifndef iovec
+#define iovec _WSABUF
+#endif
+#ifndef iov_base
+#define iov_base buf
+#endif
+#ifndef iov_len
+#define iov_len len
+#endif
+#else
 struct iovec {
     void  *iov_base;
     size_t iov_len;
 };
+#endif
@@ -171,1 +179,1 @@
-                const_cast<const void *>((m_tail - 1)->iov_base)
+                (m_tail - 1)->iov_base
--