diff --git a/include/ac/socket.h b/include/ac/socket.h
index d076763146..501426b135 100644
--- a/include/ac/socket.h
+++ b/include/ac/socket.h
@@ -105,8 +105,4 @@
 #endif /* __alpha && !VMS */
 
 
-#if defined( WSAEWOULDBLOCK )
-#define EWOULDBLOCK WSAEWOULDBLOCK
-#endif
-
 #endif /* _AC_SOCKET_H_ */