diff --git a/sys/conf/files b/sys/conf/files
index 63a226104594..ba2ca5d74667 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -462,7 +462,6 @@ kern/tty_cons.c		standard
 kern/tty_pty.c		optional pty
 kern/tty_snoop.c	optional snp
 kern/tty_subr.c		standard
-kern/tty_tb.c		optional tb
 kern/tty_tty.c		standard
 kern/uipc_domain.c	standard
 kern/uipc_mbuf.c	standard