diff --git a/include/libssh2.h b/include/libssh2.h
index b4bf136e..7e131c09 100644
--- a/include/libssh2.h
+++ b/include/libssh2.h
@@ -66,6 +66,10 @@ extern "C" {
 #if defined(LIBSSH2_WIN32) && defined(_MSC_VER) && (_MSC_VER < 1300)
 typedef unsigned __int64 libssh2_uint64_t;
 typedef __int64 libssh2_int64_t;
+#if (_MSC_VER <= 1200)
+typedef long ssize_t;
+typedef unsigned int uint32_t;
+#endif
 #else
 typedef unsigned long long libssh2_uint64_t;
 typedef long long libssh2_int64_t;