diff --git a/man2/fsync.2 b/man2/fsync.2
index 255f5b2d9..58d325a9b 100644
--- a/man2/fsync.2
+++ b/man2/fsync.2
@@ -34,7 +34,7 @@
 .\"   Fix description to describe what it really does; add a few caveats.
 .\" 2006-04-28, mtk, substantial rewrite of various parts.
 .\"
-.TH FSYNC 2 2007-07-26 "Linux" "Linux Programmer's Manual"
+.TH FSYNC 2 2008-11-07 "Linux" "Linux Programmer's Manual"
 .SH NAME
 fsync, fdatasync \- synchronize a file's in-core state with storage device
 .SH SYNOPSIS
@@ -51,6 +51,9 @@ Feature Test Macro Requirements for glibc (see
 .sp
 .BR fsync ():
 _BSD_SOURCE || _XOPEN_SOURCE
+.br
+         || /* since glibc 2.8: */ _POSIX_C_SOURCE\ >=\ 200112L
+.\" _POSIX_C_SOURCE\ >=\ 200112L only since glibc 2.8
 .br
 .BR fdatasync ():
 _POSIX_C_SOURCE\ >=\ 199309L || _XOPEN_SOURCE\ >=\ 500