diff --git a/util/sign.php b/util/sign.php
index c921a2a..10a2e0a 100644
--- a/util/sign.php
+++ b/util/sign.php
@@ -46,7 +46,6 @@
 }
 
 require_once($webuidir . "/config.php");
-require_once(DIR_SYSTEM . "/helper/TrustedTimestamps.php");
 
 if(ENABLE_SYSLOG == 1) { openlog("piler-timestamp", LOG_PID, LOG_MAIL); }
 
diff --git a/webui/system/startup.php b/webui/system/startup.php
index 1369b47..1bda866 100644
--- a/webui/system/startup.php
+++ b/webui/system/startup.php
@@ -20,6 +20,11 @@
    require_once DIR_BASE . 'google-api/contrib/apiOauth2Service.php';
 }
 
+if(TSA_URL) {
+   require_once(DIR_SYSTEM . "/helper/TrustedTimestamps.php");
+}
+
+
 date_default_timezone_set(TIMEZONE);
 
 ?>