diff --git a/modules/client/back/models/address.json b/modules/client/back/models/address.json
index e8bf8d8a0..2d11b7745 100644
--- a/modules/client/back/models/address.json
+++ b/modules/client/back/models/address.json
@@ -84,6 +84,11 @@
             "type": "belongsTo",
             "model": "CustomsAgent",
             "foreignKey": "customsAgentFk"
+        },
+        "postcode": {
+            "type": "belongsTo",
+            "model": "Postcode",
+            "foreignKey": "postalCode"
         }
     }
 }