diff --git a/lib/libc/gen/setproctitle.3 b/lib/libc/gen/setproctitle.3
index 316d2ad1fdf..1dd602ef58d 100644
--- a/lib/libc/gen/setproctitle.3
+++ b/lib/libc/gen/setproctitle.3
@@ -25,6 +25,7 @@
 .Os
 .Sh NAME
 .Nm setproctitle
+.Nm setproctitle_fast
 .Nd set process title
 .Sh SYNOPSIS
 .In sys/types.h