diff --git a/4.1.4-CardBook.md b/4.1.4-CardBook.md
index 1ccc2db..9e0e7f4 100644
--- a/4.1.4-CardBook.md
+++ b/4.1.4-CardBook.md
@@ -1,7 +1,7 @@
 [CardBook](https://cardbook.icu/) is an awesome complete and well-tested Thunderbird extension implementing many features missing from the default Thunderbird address book ([that will actually get reworked soon](https://developer.thunderbird.net/planning/roadmap#address-book-rewrite-tb-78)).
 
 Although, there will be a glitch against Thunderbird v68 if you use this `thunderbird user.js`.  
-You'll have to **relax** `network.cookie.cookieBehavior` from `2` to `1`.
+You'll have to **relax** `network.cookie.cookieBehavior` from `2` to `1` (preference `2701`).
 
 For further information, see [this page](https://gitlab.com/CardBook/CardBook/wikis/Migration%20to%20Thunderbird%2068#easy-case).