diff --git a/src/PlatformSockets.h b/src/PlatformSockets.h
index 5e5dffc..679f7cf 100644
--- a/src/PlatformSockets.h
+++ b/src/PlatformSockets.h
@@ -18,6 +18,7 @@
 #define EINPROGRESS WSAEINPROGRESS
 #define EINTR WSAEINTR
 #define ETIMEDOUT WSAETIMEDOUT
+#define ECONNREFUSED WSAECONNREFUSED
 
 typedef int SOCK_RET;
 typedef int SOCKADDR_LEN;