diff --git a/man7/udp.7 b/man7/udp.7
index 8e9eecb18..113d91f5b 100644
--- a/man7/udp.7
+++ b/man7/udp.7
@@ -195,10 +195,9 @@ This option should not be used in code intended to be
 portable.
 .\" FIXME document UDP_ENCAP (new in kernel 2.5.67)
 .\" From include/linux/udp.h:
-.\" /* UDP encapsulation types */
-.\" #define UDP_ENCAP_ESPINUDP_NON_IKE      1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
-.\" #define UDP_ENCAP_ESPINUDP      2 /* draft-ietf-ipsec-udp-encaps-06 */
-.\" #define UDP_ENCAP_L2TPINUDP     3 /* rfc2661 */
+.\"     UDP_ENCAP_ESPINUDP_NON_IKE draft-ietf-ipsec-nat-t-ike-00/01
+.\"     UDP_ENCAP_ESPINUDP draft-ietf-ipsec-udp-encaps-06
+.\"     UDP_ENCAP_L2TPINUDP rfc2661 
 .SS Ioctls
 These ioctls can be accessed using
 .BR ioctl (2).