diff --git a/man2/clock_getres.2 b/man2/clock_getres.2
index 0812d159a..fa2e922ff 100644
--- a/man2/clock_getres.2
+++ b/man2/clock_getres.2
@@ -205,6 +205,13 @@ specified is not supported on this system.
 .\" and CLOCK_THREAD_CPUTIME_ID, when probably the proper error should be
 .\" EPERM.
 .TP
+.B EINVAL
+.RB ( clock_settime ()):
+.I tp.tv_sec
+is negative or
+.I tv.tv_nsec
+is outside the range [0..999,999,999].
+.TP
 .B EPERM
 .BR clock_settime ()
 does not have permission to set the clock indicated.