diff --git a/src/windows.hpp b/src/windows.hpp
index b90e17b8..44e86c68 100644
--- a/src/windows.hpp
+++ b/src/windows.hpp
@@ -44,10 +44,10 @@
 
 #ifdef __MINGW32__
 //  Require Windows XP or higher with MinGW for getaddrinfo().
-#if(_WIN32_WINNT >= 0x0501)
+#if(_WIN32_WINNT >= 0x0600)
 #else
 #undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0501
+#define _WIN32_WINNT 0x0600
 #endif
 #endif