diff --git a/source b/source
index e55247d1fcd..1135877b840 100644
--- a/source
+++ b/source
@@ -113697,7 +113697,7 @@ interface <dfn interface>BroadcastChannel</dfn> : <span>EventTarget</span> {
   <div w-nodev>
 
   <p>A <code>BroadcastChannel</code> object has a <dfn>channel name</dfn> and a <dfn
-      data-x="concept-BroadcastChannel-closed">closed flag</dfn>.</p>
+  data-x="concept-BroadcastChannel-closed">closed flag</dfn>.</p>
 
   <p>The <dfn><code data-x="dom-BroadcastChannel">new BroadcastChannel(<var>name</var>)</code></dfn>
   constructor steps are:</p>