diff --git a/man7/tcp.7 b/man7/tcp.7
index aaa8fb758..6669c11f6 100644
--- a/man7/tcp.7
+++ b/man7/tcp.7
@@ -62,7 +62,7 @@
 .\"	    commit b139ba4e90dccbf4cd4efb112af96a5c9e0b098c
 .\"	    Author: Pavel Emelyanov <xemul@parallels.com>
 .\"
-.TH TCP  7 2012-04-23 "Linux" "Linux Programmer's Manual"
+.TH TCP  7 2013-04-18 "Linux" "Linux Programmer's Manual"
 .SH NAME
 tcp \- TCP protocol
 .SH SYNOPSIS
@@ -862,6 +862,10 @@ to read or
 .BR setsockopt (2)
 to write the option with the option level argument set to
 .BR IPPROTO_TCP .
+Unless otherwise noted,
+.I optval
+is a pointer to an
+.IR int .
 .\" or SOL_TCP on Linux
 In addition,
 most