diff --git a/admin/searchengine/elasticsearch/mappings.yaml b/admin/searchengine/elasticsearch/mappings.yaml
index d3c8798b6f..139d66ffc4 100644
--- a/admin/searchengine/elasticsearch/mappings.yaml
+++ b/admin/searchengine/elasticsearch/mappings.yaml
@@ -2067,6 +2067,10 @@ biblios:
       marc_type: marc21
       sort: 1
       suggestible: ''
+    - facet: ''
+      marc_field: 028a
+      marc_type: marc21
+      sort: 1
     - facet: ''
       marc_field: 010az
       marc_type: unimarc