diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index 3d1005c..ffe3e6c 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -16,7 +16,7 @@ This list covers privacy and security related extensions only. While we believe
 * [Multi-Account Containers](https://addons.mozilla.org/firefox/addon/multi-account-containers)
   - Useful if you want to log into the same site using different accounts as you will be able to select certain tabs to use specific VPN servers
 * [Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)
-  - Allows you to run rules to modify modify the request header and response header, cancel a request and redirect a request. Be careful not to alter your passive fingerprint
+  - Allows you to run rules to modify the request header and response header, cancel a request and redirect a request. Be careful not to alter your passive fingerprint
 * [Request Control](https://addons.mozilla.org/firefox/addon/requestcontrol/) | [GitHub](https://github.com/tumpio/requestcontrol) | [Manual](https://github.com/tumpio/requestcontrol/blob/master/_locales/en/manual.md) | [Testing links](https://github.com/tumpio/requestcontrol/wiki/Testing-links)
 * [Redirector](https://addons.mozilla.org/firefox/addon/redirector/) <sup>✔ [Privacy](https://github.com/einaregilsson/Redirector/blob/master/privacy.md)</sup> | [GitHub](https://github.com/einaregilsson/Redirector)
 * [CanvasBlocker](https://addons.mozilla.org/firefox/addon/canvasblocker/) <sup>✔ [Privacy](https://addons.mozilla.org/firefox/addon/canvasblocker/privacy/)</sup> | [GitHub](https://github.com/kkapsner/CanvasBlocker)