diff --git a/spec/custom/index.html b/spec/custom/index.html
index 8d7b42bc..42ff43cd 100644
--- a/spec/custom/index.html
+++ b/spec/custom/index.html
@@ -336,11 +336,11 @@ <h3 id="types-of-callbacks">Types of Callbacks</h3>
     <dd>Unless specified otherwise, this callback <strong>must</strong> be <a href="#dfn-enqueue-lifecycle-callback">enqueued</a> whenever <a href="#dfn-custom-element">custom element</a>'s <a href="http://dom.spec.whatwg.org/#concept-attribute">attribute</a> is <a href="http://dom.spec.whatwg.org/#attribute-is-added">added</a>, <a href="http://dom.spec.whatwg.org/#attribute-is-changed">changed</a> or <a href="http://dom.spec.whatwg.org/#attribute-is-removed">removed</a>. Depending on the type of <a href="http://dom.spec.whatwg.org/#concept-attribute">attribute</a> modification, the following additional strings are added to the queue item:
     <dl>
     <dt><a href="http://dom.spec.whatwg.org/#attribute-is-added">attribute is set</a></dt>
-        <dd><a href="http://dom.spec.whatwg.org/#concept-attribute-name">attribute name</a>, <strong>null</strong> and new <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a></dd>
+        <dd><a href="http://dom.spec.whatwg.org/#concept-attribute-name">attribute name</a>, <strong>null</strong>, new <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a>, and the <a href="http://dom.spec.whatwg.org/#concept-attribute-namespace">attribute namespace</a>.</dd>
     <dt><a href="http://dom.spec.whatwg.org/#attribute-is-changed">attribute is changed</a></dt>
-        <dd><a href="http://dom.spec.whatwg.org/#concept-attribute-name">attribute name</a>, old <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a> and new <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a></dd>
+        <dd><a href="http://dom.spec.whatwg.org/#concept-attribute-name">attribute name</a>, old <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a>, new <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a>, and the <a href="http://dom.spec.whatwg.org/#concept-attribute-namespace">attribute namespace</a>.</dd>
     <dt><a href="http://dom.spec.whatwg.org/#attribute-is-removed">attribute is removed</a>
-        <dd><a href="http://dom.spec.whatwg.org/#concept-attribute-name">attribute name</a>, old <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a> and <strong>null</strong></dd>
+        <dd><a href="http://dom.spec.whatwg.org/#concept-attribute-name">attribute name</a>, old <a href="http://dom.spec.whatwg.org/#concept-attribute-value">attribute value</a>, <strong>null</strong>, and the <a href="http://dom.spec.whatwg.org/#concept-attribute-namespace">attribute namespace</a>.</dd>
     </dl>
 </dl>