diff --git a/setup/start/systemd/box.service b/setup/start/systemd/box.service
index 31e7cb01f..80c63675b 100644
--- a/setup/start/systemd/box.service
+++ b/setup/start/systemd/box.service
@@ -14,6 +14,7 @@ Restart=always
 ExecStart=/home/yellowtent/box/box.js
 ExecReload=/bin/kill -HUP $MAINPID
 ; we run commands like df which will parse properly only with correct locale
+; add "oidc-provider:*" to DEBUG for OpenID debugging
 Environment="HOME=/home/yellowtent" "USER=yellowtent" "DEBUG=box:*,connect-lastmile,-box:ldap" "BOX_ENV=cloudron" "NODE_ENV=production" "LC_ALL=C" "AWS_SDK_JS_SUPPRESS_MAINTENANCE_MODE_MESSAGE=1"
 ; kill apptask processes as well
 KillMode=control-group