diff --git a/Optional-Hardening.md b/Optional-Hardening.md
index fd974ce..1a89246 100644
--- a/Optional-Hardening.md
+++ b/Optional-Hardening.md
@@ -234,7 +234,7 @@ user_pref("security.ssl.require_safe_negotiation", true);
 ***
 
 ### default-browser-agent
-On Windows, Mozilla [collects](https://techdows.com/2020/04/what-is-firefox-default-browser-agent-and-how-to-disable-it.html) information on what you've set as your default browser.
+On Windows, Mozilla [collects](https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/data/default-browser-ping.html) information on what you've set as your default browser.
 
 > [!WARNING]
 > Breaks **Make Default...** button to set Firefox as the default browser on Windows.