diff --git a/polyp/winsock.h b/polyp/winsock.h
index 60fac87de..89ef7ba0b 100644
--- a/polyp/winsock.h
+++ b/polyp/winsock.h
@@ -4,7 +4,6 @@
 #ifdef HAVE_WINSOCK2_H
 #include <winsock2.h>
 
-#define EBADF           WSAEBADF
 #define ESHUTDOWN       WSAESHUTDOWN
 #define ECONNRESET      WSAECONNRESET
 #define ECONNABORTED    WSAECONNABORTED