diff --git a/source b/source
index 2f6d690e48d..52259ce8fce 100644
--- a/source
+++ b/source
@@ -62249,7 +62249,7 @@ interface <dfn interface>HTMLDialogElement</dfn> : <span>HTMLElement</span> {
 
      <li><p>If <var>subject</var>'s <span>node document</span>'s <span>focused area of the
      document</span>'s <span>DOM anchor</span> is a <span>shadow-including inclusive
-     descendant</span> of <var>element</var>, or <var>wasModal</var> is true, then run the
+     descendant</span> of <var>subject</var>, or <var>wasModal</var> is true, then run the
      <span>focusing steps</span> for <var>element</var>; the viewport should not be scrolled by
      doing this step.</p></li>
     </ol>