diff --git a/package/busybox/mdev.conf b/package/busybox/mdev.conf
index 4fafe63f0c..241c1c27df 100644
--- a/package/busybox/mdev.conf
+++ b/package/busybox/mdev.conf
@@ -20,6 +20,7 @@ tty		root:tty 666
 tty[0-9]*	root:tty 660
 vcsa*[0-9]*	root:tty 660
 ttyS[0-9]*	root:root 660
+ttyUSB[0-9]*	root:root 660
 
 # alsa sound devices
 pcm.*		root:audio 660 =snd/