diff --git a/function/scf.php b/function/scf.php
index d9d84af..02d6e7a 100644
--- a/function/scf.php
+++ b/function/scf.php
@@ -6,6 +6,7 @@ $commonEnv = [
     //'SecretKey',
     //'admin',
     'adminloginpage',
+    'background',
     //'disktag',
     'language',
     'passfile',