diff --git a/net/xl2tpd/files/l2tp.sh b/net/xl2tpd/files/l2tp.sh
index 45fd39865..8a931adf9 100644
--- a/net/xl2tpd/files/l2tp.sh
+++ b/net/xl2tpd/files/l2tp.sh
@@ -15,6 +15,7 @@ proto_l2tp_init_config() {
 	proto_config_add_string "pppd_options"
 	proto_config_add_boolean "ipv6"
 	proto_config_add_int "mtu"
+	proto_config_add_int "checkup_interval"
 	proto_config_add_string "server"
 	available=1
 	no_device=1