diff --git a/config/delta-producer/public/export.json b/config/delta-producer/public/export.json
index b3dfe11..425f809 100644
--- a/config/delta-producer/public/export.json
+++ b/config/delta-producer/public/export.json
@@ -109,7 +109,8 @@
       "properties": [
         "http://mu.semte.ch/vocabularies/core/uuid",
         "http://www.w3.org/2004/02/skos/core#prefLabel",
-        "http://purl.org/dc/terms/identifier"
+        "http://purl.org/dc/terms/identifier",
+        "http://www.w3.org/ns/org#classification"
       ],
       "additionalFilter": "BIND(<http://data.lblod.info/id/bestuurseenheden/141d9d6b-54af-4d17-b313-8d1c30bc3f5b> as ?subject)"
     },