diff --git a/how-to-mitigate-fingerprinting-and-ip-leaks-using-firefox-advanced-preferences/README.md b/how-to-mitigate-fingerprinting-and-ip-leaks-using-firefox-advanced-preferences/README.md
index 6f70b8c..580b7f8 100644
--- a/how-to-mitigate-fingerprinting-and-ip-leaks-using-firefox-advanced-preferences/README.md
+++ b/how-to-mitigate-fingerprinting-and-ip-leaks-using-firefox-advanced-preferences/README.md
@@ -23,6 +23,8 @@ Listed: true
 ### Step 4: open `about:config` and set the following
 
 ```
+beacon.enabled = false
+dom.battery.enabled = false
 dom.event.clipboardevents.enabled = false
 geo.enabled = false
 media.eme.enabled = false