diff --git a/windows/JackNetWinSocket.h b/windows/JackNetWinSocket.h
index 153f65bb..43d99c24 100644
--- a/windows/JackNetWinSocket.h
+++ b/windows/JackNetWinSocket.h
@@ -21,7 +21,7 @@
 #define __JackNetWinSocket__
 
 #include "JackNetSocket.h"
-#ifdef __MINGW32__
+#ifdef WIN32
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include <stdint.h>
diff --git a/wscript b/wscript
index 442dd200..de8f327f 100644
--- a/wscript
+++ b/wscript
@@ -209,6 +209,7 @@ def configure(conf):
     if conf.env['IS_WINDOWS']:
         conf.env.append_unique('CCDEFINES', '_POSIX')
         conf.env.append_unique('CXXDEFINES', '_POSIX')
+        conf.env.append_unique('DEFINES', ['_WINSOCKAPI_'])
 
     conf.env.append_unique('CXXFLAGS', '-Wall')
     conf.env.append_unique('CXXFLAGS', '-std=gnu++11')