diff --git a/core/htmlsanitizer.class.inc.php b/core/htmlsanitizer.class.inc.php
index 907e94286..59be21623 100644
--- a/core/htmlsanitizer.class.inc.php
+++ b/core/htmlsanitizer.class.inc.php
@@ -206,6 +206,7 @@ class HTMLDOMSanitizer extends HTMLSanitizer
 		'q' => array(),
 		'hr' => array('style'),
 		'pre' => array(),
+		'center' => array(),
 	);
 
 	protected static $aAttrsWhiteList = array(