--- a/scripts/netifd-wireless.sh
+++ b/scripts/netifd-wireless.sh
@@ -70,7 +70,7 @@ _wdev_prepare_channel() {
 	}
 
 	case "$hwmode" in
-		a|b|g) ;;
+		a|b|g|ad) ;;
 		*)
 			if [ "$channel" -gt 14 ]; then
 				hwmode=a