diff --git a/bookshop/srv/cat-service.js b/bookshop/srv/cat-service.js
index 2a22608a..0521c7ab 100644
--- a/bookshop/srv/cat-service.js
+++ b/bookshop/srv/cat-service.js
@@ -1,3 +1,4 @@
+const cds = require('@sap/cds')
 module.exports = class CatalogService extends cds.ApplicationService { init() {
 
   const { Books } = cds.entities('sap.capire.bookshop')