diff --git a/man2/clock_nanosleep.2 b/man2/clock_nanosleep.2
index 3e7ce758a..891ec4a07 100644
--- a/man2/clock_nanosleep.2
+++ b/man2/clock_nanosleep.2
@@ -223,7 +223,7 @@ has no effect on signals dispositions or the signal mask.
 POSIX.1 specifies that after changing the value of the
 .B CLOCK_REALTIME
 clock via
-.BR clock_settime (),
+.BR clock_settime (3),
 the new clock value shall be used to determine the time
 at which a thread blocked on an absolute
 .BR clock_nanosleep ()
@@ -236,7 +236,7 @@ POSIX.1 specifies that
 changing the value of the
 .B CLOCK_REALTIME
 clock via
-.BR clock_settime ()
+.BR clock_settime (3)
 shall have no effect on a thread that is blocked on a relative
 .BR clock_nanosleep ().
 .SH "SEE ALSO"