diff --git a/include/ntapi/nt_socket.h b/include/ntapi/nt_socket.h
index 2c4d807..aad4c0d 100644
--- a/include/ntapi/nt_socket.h
+++ b/include/ntapi/nt_socket.h
@@ -281,27 +281,6 @@
 #define NT_AFD_SHARE_WILDCARD	(0x02u)
 #define NT_AFD_SHARE_EXCLUSIVE	(0x03u)
 
-/* send, sendto, sendmsg: *nix flags and bit place-holders */
-#define NT_MSG_OOB		(0x00000001u)
-#define NT_MSG_PEEK		(0x00000002u)
-#define NT_MSG_DONTROUTE	(0x00000004u)
-#define NT_MSG_CTRUNC		(0x00000008u)
-#define NT_MSG_PROXY		(0x00000010u)
-#define NT_MSG_TRUNC		(0x00000020u)
-#define NT_MSG_DONTWAIT		(0x00000040u)
-#define NT_MSG_EOR		(0x00000080u)
-#define NT_MSG_WAITALL		(0x00000100u)
-#define NT_MSG_FIN		(0x00000200u)
-#define NT_MSG_SYN		(0x00000400u)
-#define NT_MSG_CONFIRM		(0x00000800u)
-#define NT_MSG_RST		(0x00001000u)
-#define NT_MSG_ERRQUEUE		(0x00002000u)
-#define NT_MSG_NOSIGNAL		(0x00004000u)
-#define NT_MSG_MORE		(0x00008000u)
-#define NT_MSG_WAITFORONE	(0x00010000u)
-#define NT_MSG_CMSG_CLOEXEC	(0x40000000u)
-
-
 /* socket structures */
 typedef struct _nt_socket {
 	union {