Index: /CKEditor/tests/tt/6642/1.js
===================================================================
--- /CKEditor/tests/tt/6642/1.js	(revision 7142)
+++ /CKEditor/tests/tt/6642/1.js	(revision 7143)
@@ -16,4 +16,4 @@
 editor.type( Keys.CONTROL, 'a' ).type( Keys.CONTROL, 'c' ).type( Keys.END ).type( Keys.ARROW_LEFT, 5 ).type( Keys.CONTROL, 'v' );
 var expected = '<h1>hea</h1><h1>heading1</h1><h1>ding1</h1>';
-var actual = browser.cleanHtml( editor.runAtEditor( function() { return editor.getSnapshot(); } ) ).replace( /<br[^>]*>/ig, '' );
+var actual = browser.cleanHtml( editor.runAtEditor( function() { return editor.getSnapshot(); } ), { lowerCase: 1 } ).replace( /<br[^>]*>/ig, '' );
 Assert.areEqual(expected, actual, "Editor output doesn't match." );