diff --git a/man2/poll.2 b/man2/poll.2
index 7cf164238..e04716bfe 100644
--- a/man2/poll.2
+++ b/man2/poll.2
@@ -28,7 +28,7 @@
 .\" 2006-07-01, mtk, Added POLLRDHUP + various other wording and
 .\"	formatting changes.
 .\"
-.TH POLL 2 2010-09-20 "Linux" "Linux Programmer's Manual"
+.TH POLL 2 2012-04-15 "Linux" "Linux Programmer's Manual"
 .SH NAME
 poll, ppoll \- wait for some event on a file descriptor
 .SH SYNOPSIS
@@ -72,6 +72,17 @@ array in
 The field
 .I fd
 contains a file descriptor for an open file.
+If this field is negative, then the corresponding
+.I events
+field is ignored and the
+.I revents
+field returns zero.
+(This provides an easy way of ignoring a
+file descriptor for a single
+.BR poll ()
+call: simply negate the
+.I fd
+field.)
 
 The field
 .I events