Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 4490)
+++ /CKEditor/trunk/CHANGES.html	(revision 4491)
@@ -58,4 +58,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/4621">#4621</a> : Fixed clicking below table cause a empty table been generated.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/3373">#3373</a> : Fixed empty context menu when there's no menu item at all.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/4473">#4473</a> : Fixed setting rules on the same element tag name throw error.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/core/htmlparser/filter.js
===================================================================
--- /CKEditor/trunk/_source/core/htmlparser/filter.js	(revision 4490)
+++ /CKEditor/trunk/_source/core/htmlparser/filter.js	(revision 4491)
@@ -128,4 +128,7 @@
 	function addItemsToList( list, items, priority )
 	{
+		if( typeof items == 'function' )
+			items = [ items ];
+
 		var i, j,
 			listLength = list.length,