diff --git a/godoor.go b/godoor.go
index 5eb59e2..b33b2f7 100644
--- a/godoor.go
+++ b/godoor.go
@@ -190,6 +190,7 @@ func setup(ctx context.Context) {
 
 	go runHttpServer()
 
+	// interval in which /allowed keycards are synced at
 	http.DefaultClient.Timeout = 120 * time.Second
 
 	for {