diff --git a/ding_periodical.field.inc b/ding_periodical.field.inc
index 337462d..1deb719 100644
--- a/ding_periodical.field.inc
+++ b/ding_periodical.field.inc
@@ -72,13 +72,6 @@ function ding_periodical_field_formatter_view($entity_type, $entity, $field, $in
     $availability = ding_provider_invoke('availability', 'holdings', array($entity->provider_id));
     if (isset($availability[$entity->provider_id])) {
       $issues = $availability[$entity->provider_id]['issues'];
-      // array_walk($issues, 'asort') complains about 'Notice: A non
-      // well formed numeric value encountered'.
-       foreach ($issues as $k => $v) {
-        asort($v);
-      }
-      ksort($issues);
-
       if ($issues) {
         $element[$delta] = array(
           '#theme' => 'ding_periodical_issues',