diff --git a/packages/bookshop/srv/external.cds b/packages/bookshop/srv/external.cds
index f2e73c5c..2a8a5003 100644
--- a/packages/bookshop/srv/external.cds
+++ b/packages/bookshop/srv/external.cds
@@ -9,8 +9,8 @@ extend service API_BUSINESS_PARTNER with {
    * Simplified view on external addresses
    */
   @mashup entity Addresses as projection on external.A_BusinessPartnerAddress {
-    key BusinessPartner as contact,
     key AddressID as ID,
+    key BusinessPartner as contact,
     Country as country,
     CityName as cityName,
     PostalCode as postalCode,