diff --git a/sbin/devd/devd.conf b/sbin/devd/devd.conf
index 956a2970d43..730591e90d0 100644
--- a/sbin/devd/devd.conf
+++ b/sbin/devd/devd.conf
@@ -33,7 +33,9 @@ options {
 
 #
 # Configure the interface on attach.  Due to a historical accident, this
-# script is called pccard_ether.
+# script is called pccard_ether. We omit the usbus devices because those
+# devices are assocaited with the USB Bus and provide a tcpdump point
+# to capture USB packets.
 #
 # NB: DETACH events are ignored; the kernel should handle all cleanup
 #     (routes, arp cache).  Beware of races against immediate create