diff --git a/man2/chown.2 b/man2/chown.2
index 85ba4bb79..dabf9bff7 100644
--- a/man2/chown.2
+++ b/man2/chown.2
@@ -35,7 +35,7 @@
 .\"     (bsdgroups versus sysvgroups, and the effect of the parent
 .\"     directory's set-group-ID permission bit).
 .\"
-.TH CHOWN 2 2010-09-26 "Linux" "Linux Programmer's Manual"
+.TH CHOWN 2 2010-11-22 "Linux" "Linux Programmer's Manual"
 .SH NAME
 chown, fchown, lchown \- change ownership of a file
 .SH SYNOPSIS
@@ -190,6 +190,25 @@ used by the superuser (that is, ordinary users cannot give away files).
 .\" SVr4 documents additional EINVAL, EIO, EINTR, and ENOLINK
 .\" error conditions.
 .SH NOTES
+The original Linux
+.BR chown (),
+.BR fchown (),
+and
+.BR lchown ()
+system calls supported only 16-bit user and group IDs.
+Subsequently, Linux 2.4 added 
+.BR chown32 (),
+.BR fchown32 (),
+and
+.BR lchown32 (),
+supporting 32-bit IDs.
+The glibc
+.BR chown (),
+.BR fchown (),
+and
+.BR lchown ()
+wrapper functions transparently deal with the variations across kernel versions.
+
 When a new file is created (by, for example,
 .BR open (2)
 or