diff --git a/man2/timerfd_create.2 b/man2/timerfd_create.2
index c09e0309d..f90e2218d 100644
--- a/man2/timerfd_create.2
+++ b/man2/timerfd_create.2
@@ -15,6 +15,8 @@
 .\" Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 .\" MA  02111-1307  USA
 .\"
+.\" FIXME: Linux 3.0: timerfd_settime() adds a TFD_TIMER_CANCEL_ON_SET flag.
+.\"
 .TH TIMERFD_CREATE 2 2009-03-10 Linux "Linux Programmer's Manual"
 .SH NAME
 timerfd_create, timerfd_settime, timerfd_gettime \-