diff --git a/source b/source
index 9f2a547c10d..b099f0d6889 100644
--- a/source
+++ b/source
@@ -12071,8 +12071,7 @@ document.createElement("bad-1");  // (2)</code></pre>
 
    <li>
     <p>If <var>element</var> is an <span data-x="concept-already-constructed-marker"><i>already
-    constructed</i> marker</span>, then throw an <span>"<code>InvalidStateError</code>"</span>
-    <code>DOMException</code>.</p>
+    constructed</i> marker</span>, then throw a <code>TypeError</code>.</p>
 
     <div class="example">
      <p>This can occur when the author code inside the <span>custom element
@@ -12090,7 +12089,7 @@ class DontDoThis extends HTMLElement {
       // Now the construction stack will contain an <i>already constructed</i> marker.
     }
 
-    // This will then fail with an "InvalidStateError" DOMException:
+    // This will then fail with a TypeError:
     super();
   }
 }</code></pre>