diff --git a/modules/views_rss_core/views_rss_core.inc b/modules/views_rss_core/views_rss_core.inc
index d61dd3e7b6dd7e6caf9d7f8c991278ee7a20113a..85cd14d19dadcaa6a2d4c638040631c262a13ba8 100644
--- a/modules/views_rss_core/views_rss_core.inc
+++ b/modules/views_rss_core/views_rss_core.inc
@@ -120,7 +120,7 @@ function views_rss_core_preprocess_channel_date(&$variables) {
   if (count($variables['view']->result) > 0) {
     $max_date = 0;
     foreach ($variables['view']->result as $row) {
-      $key = strtolower($variables['elements'][0]['key']);
+      $key = $variables['elements'][0]['key'];
       if (isset($row->$key) && $row->$key > $max_date) {
         $max_date = $row->$key;
       }