diff --git a/man2/perfmonctl.2 b/man2/perfmonctl.2
index ea6ebbb3d..73a134af7 100644
--- a/man2/perfmonctl.2
+++ b/man2/perfmonctl.2
@@ -171,8 +171,13 @@ restart monitoring after receiving an overflow notification
 returns zero when the operation is successful.
 On error, \-1 is returned and an error code is set in \fBerrno\fR.
 
-.SH AVAILABILITY
-This system call is implemented only on the IA-64 architecture since kernel 2.6.
+.SH VERSIONS
+.BR perfmonctl ()
+is available since Linux 2.4.
+
+.SH CONFORMING TO
+.BR perfmonctl ()
+is Linux specific and is available only on the IA-64 architecture.
 
 .SH "SEE ALSO"
 .BR gprof(1),