diff --git a/plugins/ktcore/KTCorePlugin.php b/plugins/ktcore/KTCorePlugin.php
index 12c514a..1955d9e 100644
--- a/plugins/ktcore/KTCorePlugin.php
+++ b/plugins/ktcore/KTCorePlugin.php
@@ -2,4 +2,6 @@
 
 require_once('KTDocumentActions.php');
 
+require_once(KT_LIB_DIR . '/storage/ondiskpathstoragemanager.inc.php');
+
 ?>