diff --git a/inc/rss.php b/inc/rss.php
index 51ca2b0..8942a5e 100755
--- a/inc/rss.php
+++ b/inc/rss.php
@@ -69,6 +69,9 @@ class Feed extends PhpObject {
 		$sRssFeedHeader .= self::getHtml('Lutran.fr RSS Feed Generator', 'generator');
 		$sRssFeedHeader .= self::getHtml($this->asDesc['webmaster_mail'].' (Webmaster)', 'webMaster');
 		
+		//Alert on empty feed
+		if(empty($this->asItems)) $this->addError('Feed "'.$this->asDesc['title'].'" is empty');
+		
 		//feed items
 		$asSortedItems = $this->rSortTimeMatrix($this->asItems, 'pub_date');
 		$sItems = implode("\n", array_map(array($this, 'buildItem'), $asSortedItems));
@@ -163,6 +166,7 @@ class Feed extends PhpObject {
 	
 	private static function rSortTimeMatrix($asMatrix, $sTimeCol)
 	{
+		$asKeys = array();
 		$asResult = array();
 		foreach($asMatrix as $iRowId=>$asLine) $asKeys[$iRowId] = strtotime($asLine[$sTimeCol]);
 		arsort($asKeys);