diff --git a/modules/node/node.module b/modules/node/node.module
index f46f2d050f76a457d7f24b1d53edf6f1a24296f6..ba10ea17162f4bbea44c8326ee83b4ad85f0d893 100644
--- a/modules/node/node.module
+++ b/modules/node/node.module
@@ -1671,7 +1671,7 @@ function node_feed($nids = FALSE, $channel = array()) {
 
     // Allow modules to add additional item fields and/or modify $item
     $extra = node_invoke_nodeapi($item, 'rss item');
-    $extra = array_merge($extra, array(array('key' => 'pubDate', 'value' => format_date($item->created, 'custom', 'r')), array('key' => 'dc:creator', 'value' => $item->name), array('key' => 'guid', 'value' => $item->nid . ' at ' . $base_url, 'attributes' => array('isPermaLink' => 'false'))));
+    $extra = array_merge($extra, array(array('key' => 'pubDate', 'value' => gmdate('r', $item->created)), array('key' => 'dc:creator', 'value' => $item->name), array('key' => 'guid', 'value' => $item->nid . ' at ' . $base_url, 'attributes' => array('isPermaLink' => 'false'))));
     foreach ($extra as $element) {
       if (isset($element['namespace'])) {
         $namespaces = array_merge($namespaces, $element['namespace']);