diff --git a/authorities/blinddetail-biblio-search.pl b/authorities/blinddetail-biblio-search.pl
index 838e4bad67..9e7930d793 100755
--- a/authorities/blinddetail-biblio-search.pl
+++ b/authorities/blinddetail-biblio-search.pl
@@ -122,9 +122,9 @@ if ($authid) {
             $indicator2 = defined $thes_mapping{$thes_008_11} ? $thes_mapping{$thes_008_11} : $thes_008_11;
             if ($indicator2 eq '7') {
                 if ($thes_008_11 eq 'r') {
-                    push @subfield_loop, { marc_subfield => '2', marc_values => ('aat') };
+                    push @subfield_loop, { marc_subfield => '2', marc_values => [ 'aat' ] };
                 } elsif ($thes_008_11 eq 's') {
-                    push @subfield_loop, { marc_subfield => '2', marc_values => ('sears') };
+                    push @subfield_loop, { marc_subfield => '2', marc_values => [ 'sears' ] };
                 }
             }
         }