diff --git a/include/ntapi/nt_socket.h b/include/ntapi/nt_socket.h
index 82cae16..68dce1a 100644
--- a/include/ntapi/nt_socket.h
+++ b/include/ntapi/nt_socket.h
@@ -198,6 +198,7 @@
 #define NT_AFD_POLL_LOCAL_CLOSE			(0x20u)
 #define NT_AFD_POLL_CONNECT			(0x40u)
 #define NT_AFD_POLL_ACCEPT			(0x80u)
+#define NT_AFD_POLL_CONNECT_FAIL		(0x100u)
 
 /* afd socket shutdown bits */
 #define NT_AFD_DISCONNECT_WR	(0x01u)