diff --git a/data/templates/rss.tpl.php b/data/templates/rss.tpl.php
index 87c86e7..21bdeab 100644
--- a/data/templates/rss.tpl.php
+++ b/data/templates/rss.tpl.php
@@ -1,5 +1,5 @@
 <?php
-echo '<' . '?xml version="1.0" encoding="UTF-8" ?' . ">\n";
+echo '<' . '?xml version="1.0" encoding="utf-8" ?' . ">\n";
 ?>
 <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
 <channel>