diff --git a/source/lib/sysdep/win/wposix.h b/source/lib/sysdep/win/wposix.h
index 8f66ee29f9..6d4eeee44c 100755
--- a/source/lib/sysdep/win/wposix.h
+++ b/source/lib/sysdep/win/wposix.h
@@ -403,6 +403,7 @@ struct sockaddr_in
 #define INET_ADDRSTRLEN 16
 
 #define INADDR_ANY 0
+#define INADDR_LOOPBACK 0x7f000001
 #define INADDR_NONE ((in_addr_t)-1)
 
 #define IPPROTO_IP 0