diff --git a/sites/all/modules/views_oai_pmh/theme/views_oai_pmh.theme.inc b/sites/all/modules/views_oai_pmh/theme/views_oai_pmh.theme.inc
index 7576d17..84ace3b 100644
--- a/sites/all/modules/views_oai_pmh/theme/views_oai_pmh.theme.inc
+++ b/sites/all/modules/views_oai_pmh/theme/views_oai_pmh.theme.inc
@@ -22,7 +22,7 @@ function theme_views_oai_pmh_row_dc_fields($vars) {
     $empty = $field_output !== 0 && empty($field_output);
     if (empty($field->options['exclude']) && (!$empty || (empty($field->options['hide_empty']) && empty($vars['options']['hide_empty'])))) {
       $key = check_plain(_views_oai_pmh_xml_tag_clean($view->field[$id]->label()));
-      if (isset($field->multiple)) {
+      if (!empty($field->multiple)) {
         $separator = $field->options['separator'];
         foreach (explode($separator, $field_output) as $value) {
           $item['key'] = $key;