diff --git a/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm b/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
index 86669cee08..321773faf4 100644
--- a/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
+++ b/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
@@ -543,8 +543,8 @@ sub _build_scan_query {
         $index => {
             terms => {
                 field => $index . '__facet',
-                order => { '_term' => 'asc' },
-                include => $self->_create_regex_filter($self->_clean_search_term($term)) . '.*'
+                order => { '_key' => 'asc' },
+                include => $self->_create_regex_filter($self->clean_search_term($term)) . '.*'
             }
         }
     };
diff --git a/t/db_dependent/Koha/SearchEngine/Elasticsearch/QueryBuilder.t b/t/db_dependent/Koha/SearchEngine/Elasticsearch/QueryBuilder.t
index 1266da5ffe..a6739ad4cf 100644
--- a/t/db_dependent/Koha/SearchEngine/Elasticsearch/QueryBuilder.t
+++ b/t/db_dependent/Koha/SearchEngine/Elasticsearch/QueryBuilder.t
@@ -499,7 +499,7 @@ subtest 'build_query tests' => sub {
         $query->{aggregations}{'author'}{'terms'},
         {
             field => 'author__facet',
-            order => { '_term' => 'asc' },
+            order => { '_key' => 'asc' },
             include => '[nN][eE][wW].*'
         },
         "scan aggregation request is properly formed"
@@ -517,7 +517,7 @@ subtest 'build_query tests' => sub {
         $query->{aggregations}{'subject'}{'terms'},
         {
             field => 'subject__facet',
-            order => { '_term' => 'asc' },
+            order => { '_key' => 'asc' },
             include => '[nN][eE][wW].*'
         },
         "scan aggregation request is properly formed"