diff --git a/man2/sched_yield.2 b/man2/sched_yield.2
index 739a4abab..f3dcff8cc 100644
--- a/man2/sched_yield.2
+++ b/man2/sched_yield.2
@@ -76,5 +76,16 @@ unnecessarily or inappropriately
 schedulable threads are still held by the caller),
 since doing so will result in unnecessary context switches,
 which will degrade system performance.
+.PP
+.BR sched_yield ()
+is intended for use with read-time scheduling policies (i.e.,
+.BR SCHED_FIFO
+or
+.BR SCHED_RR ).
+Use of
+.BR sched_yield ()
+with nondeterministic scheduling policies such as
+.BR SCHED_OTHER
+is unspecified and very likely means your application design is broken.
 .SH SEE ALSO
 .BR sched (7)