diff --git a/man2/chmod.2 b/man2/chmod.2
index e42a77754..6c046fd5a 100644
--- a/man2/chmod.2
+++ b/man2/chmod.2
@@ -28,16 +28,18 @@
 .\"   <michael@cantor.informatik.rwth-aachen.de>: NFS details
 .\" Modified 2004-06-23 by Michael Kerrisk <mtk-manpages@gmx.net>
 .\"
-.TH CHMOD 2 2004-06-23 "Linux" "Linux Programmer's Manual"
+.TH CHMOD 2 2004-07-08 "Linux" "Linux Programmer's Manual"
 .SH NAME
 chmod, fchmod \- change permissions of a file
 .SH SYNOPSIS
-.B #include <sys/types.h>
-.br
 .B #include <sys/stat.h>
 .sp
 .BI "int chmod(const char *" path ", mode_t " mode );
+.sp
+.BR "#define _XOPEN_SOURCE 500   "  "/* or: " "#define _BSD_SOURCE " */
 .br
+.B #include <sys/stat.h>
+.sp
 .BI "int fchmod(int " fildes ", mode_t " mode );
 .SH DESCRIPTION
 The mode of the file given by