diff --git a/js/scripts.js.php b/js/scripts.js.php
index ada86b598..ede7fe772 100644
--- a/js/scripts.js.php
+++ b/js/scripts.js.php
@@ -41,7 +41,7 @@
 var serviceCatalogEnabled = false;
 var slinkyCategories;
 var timers = [];
-var formcreatorRootDoc = '<?php echo Plugin::getWebDir('formcreator')?>';
+var formcreatorRootDoc = '<?php echo method_exists(Plugin::class, 'getWebDir') ? Plugin::getWebDir('formcreator') : 'plugins/formcreator' ?>';
 
 // === COMMON ===