diff --git a/README.md b/README.md
index f220ae9..0f6aeca 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,6 @@ Literally thousands of sources, references and suggestions. That said...
 * [12bytes](http://12bytes.org/tech/firefoxgecko-configuration-guide-for-privacy-and-performance-buffs)
    * The 12bytes article now uses this user.js and supplements it with an additonal JS hosted right [here](https://github.com/atomGit/Firefox-user.js) at github
 
-<sup>1</sup> ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/exclamation.png) Important: We HIGHLY recommend using uBlock Origin, uMatrix and a cookie extension. Section 0400, if modified, allows Tracking Protection and Safe Browsing to be disabled. Do this at your own risk. See the [implementation](https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.3-Implementation) wiki page for more.
+<sup>1</sup> ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/exclamation.png) We highly recommend using uBlock Origin and uMatrix, and maybe a cookie extension (note: cookie & persistent storage extensions fail with First Party Isolation which we use <sup>[bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1381197)</sup>). Section 0400, if modified, allows Tracking Protection and Safe Browsing to be disabled. Do this at your own risk. See the [implementation](https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.3-Implementation) wiki page for more.
 
 <sup>2</sup> The ghacks user.js was an independent project by [Thorin-Oakenpants](https://github.com/Thorin-Oakenpants) started in early 2015 and was [first published](https://www.ghacks.net/2015/08/18/a-comprehensive-list-of-firefox-privacy-and-security-settings/) at ghacks in August 2015. It was kept up-to-date and expanded by the original author with three major updates and articles. With Martin Brinkmann's blessing, it will keep the ghacks name.