diff --git a/Overview.html b/Overview.html
index 5ac036e2d..9285272de 100644
--- a/Overview.html
+++ b/Overview.html
@@ -7,7 +7,7 @@
 
 <p><a class="logo" href="https://whatwg.org/"><img alt="WHATWG" height="100" src="https://resources.whatwg.org/logo-fetch.svg" width="100"></a>
 <h1 id="cors">Fetch</h1>
-<h2 class="no-num no-toc" id="living-standard-—-last-updated-13-october-2016">Living Standard — Last Updated 13 October 2016</h2>
+<h2 class="no-num no-toc" id="living-standard-—-last-updated-17-october-2016">Living Standard — Last Updated 17 October 2016</h2>
 
 <dl>
  <dt>Participate:
@@ -4218,9 +4218,13 @@ <h3 id="headers-class"><span class="secno">6.1 </span>Headers class</h3>
  "<code title="">request</code>" and <var>name</var> is a <a href="#forbidden-header-name">forbidden header name</a>,
  return.
 
- <li><p>Otherwise, if <a href="#concept-headers-guard" title="concept-Headers-guard">guard</a> is
- "<code title="">request-no-cors</code>" and <var>name</var>/`<code title="">invalid</code>` is
- not a <a href="#cors-safelisted-request-header">CORS-safelisted request-header</a>, return.
+ <li>
+  <p>Otherwise, if <a href="#concept-headers-guard" title="concept-Headers-guard">guard</a> is "<code>request-no-cors</code>"
+  and <var>name</var>/`<code>invalid</code>` is not a <a href="#cors-safelisted-request-header">CORS-safelisted request-header</a>,
+  then return.
+
+  <p class="note">`<code>invalid</code>` is used because
+  <a href="#dom-headers-delete"><code title="dom-Headers-delete">delete()</code></a> is not passed a value as argument.
 
  <li><p>Otherwise, if <a href="#concept-headers-guard" title="concept-Headers-guard">guard</a> is
  "<code title="">response</code>" and <var>name</var> is a
@@ -5752,6 +5756,7 @@ <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
 Jake Archibald<!-- technically B.J. Archibald -->,
 James Graham,
 Janusz Majnert,
+Jeena Lee,
 Jeff Carpenter,
 Jeff Hodges,
 Jeffrey Yasskin,
@@ -5806,6 +5811,7 @@ <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
 Ryan Sleevi,
 Rory Hewitt,
 Sébastien Cevey,
+Sendil Kumar N,
 Shao-xuan Kang,
 Sharath Udupa,
 Shivakumar Jagalur Matt,
diff --git a/Overview.src.html b/Overview.src.html
index 5bddb49ae..54cacab74 100644
--- a/Overview.src.html
+++ b/Overview.src.html
@@ -4148,9 +4148,13 @@ <h3>Headers class</h3>
  "<code title>request</code>" and <var>name</var> is a <span>forbidden header name</span>,
  return.
 
- <li><p>Otherwise, if <span title=concept-Headers-guard>guard</span> is
- "<code title>request-no-cors</code>" and <var>name</var>/`<code title>invalid</code>` is
- not a <span>CORS-safelisted request-header</span>, return.
+ <li>
+  <p>Otherwise, if <span title=concept-Headers-guard>guard</span> is "<code>request-no-cors</code>"
+  and <var>name</var>/`<code>invalid</code>` is not a <span>CORS-safelisted request-header</span>,
+  then return.
+
+  <p class=note>`<code>invalid</code>` is used because
+  <code title=dom-Headers-delete>delete()</code> is not passed a value as argument.
 
  <li><p>Otherwise, if <span title=concept-Headers-guard>guard</span> is
  "<code title>response</code>" and <var>name</var> is a
@@ -5590,6 +5594,7 @@ <h2 class=no-num>Acknowledgments</h2>
 Jake Archibald<!-- technically B.J. Archibald -->,
 James Graham,
 Janusz Majnert,
+Jeena Lee,
 Jeff Carpenter,
 Jeff Hodges,
 Jeffrey Yasskin,
@@ -5644,6 +5649,7 @@ <h2 class=no-num>Acknowledgments</h2>
 Ryan Sleevi,
 Rory Hewitt,
 Sébastien Cevey,
+Sendil Kumar N,
 Shao-xuan Kang,
 Sharath Udupa,
 Shivakumar Jagalur Matt,