diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index f39bfe2..3576961 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -51,7 +51,7 @@ These extensions will not mask or alter any data sent or received, but may be us
   - Everything uMatrix did can be covered by prefs or other extensions: use uBlock Origin for any content blocking.
 * NoScript, Ghostery, Disconnect, Privacy Badger, etc
   - Redundant with uBlock Origin
-  - Note: Privacy Badger is easily [detected](https://adtechmadness.wordpress.com/2020/03/27/detecting-privacy-badgers-canvas-fp-detection/), and [no longer](https://www.eff.org/deeplinks/2020/10/privacy-badger-changing-protect-you-better) uses [hueristics](https://www.eff.org/privacybadger/faq#How-does-Privacy-Badger-work)
+  - Note: Privacy Badger is easily [detected](https://adtechmadness.wordpress.com/2020/03/27/detecting-privacy-badgers-canvas-fp-detection/), and [no longer](https://www.eff.org/deeplinks/2020/10/privacy-badger-changing-protect-you-better) uses [heuristics](https://www.eff.org/privacybadger/faq#How-does-Privacy-Badger-work)
 * Neat URL, ClearURLs
   - Redundant with uBlock Origin's [`removeparam`](https://github.com/gorhill/uBlock/wiki/Static-filter-syntax#removeparam)
 * HTTPS Everywhere