diff --git a/views/biblio_handler_filter_contributor_lastname.inc b/views/biblio_handler_filter_contributor_lastname.inc
index 19b4ee3..b6e4ee2 100644
--- a/views/biblio_handler_filter_contributor_lastname.inc
+++ b/views/biblio_handler_filter_contributor_lastname.inc
@@ -14,7 +14,7 @@ class biblio_handler_filter_contributor_lastname extends views_handler_filter_ma
                   ORDER by lastname, firstname");
     $this->value_options = array();
     foreach ($result as $row) {
-      $this->value_options[$row->lastname] = "$row->lastname, $row->firstname $row->initials";
+      $this->value_options[$row->cid] =  "$row->lastname, $row->firstname $row->initials";
     }
   }