diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index 1143256..7e6e5d8 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -10,8 +10,20 @@ This list covers privacy and security related extensions only. While we believe
 
 * [uBlock Origin](https://addons.mozilla.org/firefox/addon/ublock-origin/) <sup>✔ [Privacy](https://github.com/gorhill/uBlock/wiki/Privacy-policy)</sup> | [GitHub](https://github.com/gorhill/uBlock)
    * ⭐ Setup your [blocking mode](https://github.com/gorhill/uBlock/wiki/Blocking-mode)
-   * ⭐ 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`
+   * ⭐ 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) <sup>1</sup>
+
+> <details><summary><sup>1</sup> click me for details</summary><p>
+>
+> * Under `Filter Lists`
+> * Check `Import` under `- Custom` (at the bottom)
+> * Paste in the linked URL above
+> * Click `Apply Changes`
+> 
+> ![](https://github.com/arkenfox/user.js/blob/master/wikipiki/uboCustom.png)
+> 
+> </p></details>
+
 * [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 `1601` is too strict for you, and you override it to default `0` (so Smart Referer works)
    * We recommend Strict mode and adding exceptions