diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index ba6e414..d005ccb 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -9,6 +9,8 @@ This list covers privacy and security related extensions only. While we believe
    * ⭐ Import [Actually Legitimate URL Shortener Tool](https://raw.githubusercontent.com/DandelionSprout/adfilt/master/LegitimateURLShortener.txt) | [GitHub](https://github.com/DandelionSprout/adfilt/blob/master/LegitimateURLShortener.txt)
    * ⭐ Enable `AdGuard URL Tracking Protection`
 * [Smart Referer](https://addons.mozilla.org/firefox/addon/smart-referer/) <sup>✔ [Privacy](https://addons.mozilla.org/firefox/addon/smart-referer/privacy/)</sup> | [GitLab](https://gitlab.com/smart-referer/smart-referer) | [GitHub <sup>Archive</sup>](https://github.com/meh/smart-referer)
+   * Only needed if `1602` is too strict for you, and you override it to default `0` (so Smart Referer works)
+   * We recommend Strict mode and adding exceptions
 * [Skip Redirect](https://addons.mozilla.org/firefox/addon/skip-redirect/) | [GitHub](https://github.com/sblask/webextension-skip-redirect)
 
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