diff --git a/mmh3module.cpp b/mmh3module.cpp
index 7bc7c02..5fa8914 100644
--- a/mmh3module.cpp
+++ b/mmh3module.cpp
@@ -3,7 +3,7 @@
 #include <Python.h>
 #include "murmur_hash_3.hpp"
 
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && _MSC_VER < 1600
 // Visual C++
 typedef signed char int8_t;
 typedef signed long int32_t;
diff --git a/murmur_hash_3.hpp b/murmur_hash_3.hpp
index 7080f66..e6edd9c 100644
--- a/murmur_hash_3.hpp
+++ b/murmur_hash_3.hpp
@@ -1,6 +1,6 @@
 #pragma once
 
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && _MSC_VER < 1600
 typedef unsigned char uint8_t;
 typedef unsigned long uint32_t;
 typedef unsigned __int64 uint64_t;