diff --git a/man2/sched_setaffinity.2 b/man2/sched_setaffinity.2
index 2ba620026..da2132226 100644
--- a/man2/sched_setaffinity.2
+++ b/man2/sched_setaffinity.2
@@ -32,7 +32,7 @@
 .\" 2008-11-12, mtk, removed CPU_*() macro descriptions to a
 .\" separate CPU_SET(3) page.
 .\"
-.TH SCHED_SETAFFINITY 2 2008-11-12 "Linux" "Linux Programmer's Manual"
+.TH SCHED_SETAFFINITY 2 2008-11-13 "Linux" "Linux Programmer's Manual"
 .SH NAME
 sched_setaffinity, sched_getaffinity \- \
 set and get a process's CPU affinity mask
@@ -172,6 +172,10 @@ as 0 will set the attribute for the calling thread,
 and passing the value returned from a call to
 .BR getpid (2)
 will set the attribute for the main thread of the thread group.
+(If you are using the POSIX threads API, then use
+.B pthread_setaffinity_np(3)
+instead of 
+.BR sched_setaffinity ().)
 
 A child created via
 .BR fork (2)