diff --git a/bookshop/srv/cat-service.js b/bookshop/srv/cat-service.js
index 84c5cf6d..a9abc2e4 100644
--- a/bookshop/srv/cat-service.js
+++ b/bookshop/srv/cat-service.js
@@ -1,8 +1,9 @@
 const cds = require('@sap/cds')
-const { Books } = cds.entities ('sap.capire.bookshop')
 
 class CatalogService extends cds.ApplicationService { init(){
 
+  const { Books } = cds.entities ('sap.capire.bookshop')
+
   // Reduce stock of ordered books if available stock suffices
   this.on ('submitOrder', async req => {
     const {book,quantity} = req.data