diff --git a/man2/sched_setaffinity.2 b/man2/sched_setaffinity.2
index 7fabeb41f..bc5f9dd9d 100644
--- a/man2/sched_setaffinity.2
+++ b/man2/sched_setaffinity.2
@@ -189,7 +189,7 @@ 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)
+.BR pthread_setaffinity_np (3)
 instead of
 .BR sched_setaffinity ().)