diff --git a/sys/net/if_tuntap.c b/sys/net/if_tuntap.c
--- a/sys/net/if_tuntap.c
+++ b/sys/net/if_tuntap.c
@@ -820,7 +820,7 @@
 
 	make_dev_args_init(&args);
 	if (cr != NULL)
-		args.mda_flags = MAKEDEV_REF;
+		args.mda_flags = MAKEDEV_REF | MAKEDEV_CHECKNAME;
 	args.mda_devsw = &drv->cdevsw;
 	args.mda_cr = cr;
 	args.mda_uid = UID_UUCP;