diff --git a/_includes/sections/browser-tweaks.html b/_includes/sections/browser-tweaks.html
index 3c860c36..efa8981e 100644
--- a/_includes/sections/browser-tweaks.html
+++ b/_includes/sections/browser-tweaks.html
@@ -126,6 +126,8 @@
 <p>One of the features of resist fingerprinting is to set the reported browser timezone to UTC. If you depend on having your real time zone reported to the websites you visit, this setting may break that.</p>
   <dt>privacy.resistFingerprinting = true</dt>
   <dd>A result of the <a href="https://wiki.mozilla.org/Security/Tor_Uplift">Tor Uplift</a> effort, this preference makes Firefox more resistant to browser fingerprinting.</dd>
+  <dt>privacy.resistFingerprinting.letterboxing = true</dt>
+  <dd>This sets the resolution of your Firefox window to a standard resolution. Only use this if you are using the above <strong>privacy.resistFingerprinting</strong>
 
 <h5 id="mediaa" class="anchor"><a href="#mediaa"><i class="fas fa-link anchor-icon"></i></a> Media</h5>
 <p>This may break some websites which use VOIP based features.</p>