diff --git a/man7/udp.7 b/man7/udp.7
index 1e925d39b..ed9ec4062 100644
--- a/man7/udp.7
+++ b/man7/udp.7
@@ -9,7 +9,7 @@
 .\"
 .\" $Id: udp.7,v 1.7 2000/01/22 01:55:05 freitag Exp $
 .\"
-.TH UDP  7 2010-06-13 "Linux" "Linux Programmer's Manual"
+.TH UDP  7 2013-04-18 "Linux" "Linux Programmer's Manual"
 .SH NAME
 udp \- User Datagram Protocol for IPv4
 .SH SYNOPSIS
@@ -180,6 +180,10 @@ to read or
 .BR setsockopt (2)
 to write the option with the option level argument set to
 .BR IPPROTO_UDP .
+Unless otherwise noted,
+.I optval
+is a pointer to an
+.IR int .
 .TP
 .BR UDP_CORK " (since Linux 2.5.44)"
 If this option is enabled, then all data output on this socket