diff --git a/fs/skeleton/etc/securetty b/fs/skeleton/etc/securetty
index b25f4a5a9c..e69fec778a 100644
--- a/fs/skeleton/etc/securetty
+++ b/fs/skeleton/etc/securetty
@@ -33,3 +33,7 @@ ttyCPM3
 ttymxc0
 ttymxc1
 ttymxc2
+ttyO0
+ttyO1
+ttyO2
+ttyO3