diff --git a/lib/libc/sys/semctl.2 b/lib/libc/sys/semctl.2
index 69503710fb0..ea96a389445 100644
--- a/lib/libc/sys/semctl.2
+++ b/lib/libc/sys/semctl.2
@@ -157,7 +157,7 @@ struct semid_ds {
 On success, when
 .Fa cmd
 is one of
-.Dv GETVAL , GETNCNT
+.Dv GETVAL , GETPID , GETNCNT
 or
 .Dv GETZCNT ,
 .Fn semctl