diff --git a/core/HTTP.php b/core/HTTP.php
index fb12e5521..04f7d818a 100644
--- a/core/HTTP.php
+++ b/core/HTTP.php
@@ -105,6 +105,7 @@ class HTTP {
 
 	static function findByTagAndAttribute($content, $attribs) {
 		$regExps = array();
+		$content = '';
 		
 		foreach($attribs as $tag => $attrib) {
 			if(!is_numeric($tag)) $tagPrefix = "$tag ";