diff --git a/charger/openwb/native/rfid.go b/charger/openwb/native/rfid.go
index ad02a405a..7ebb3121a 100644
--- a/charger/openwb/native/rfid.go
+++ b/charger/openwb/native/rfid.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package native
 
 import (