diff --git a/application/palemoon/app/profile/mypal.js b/application/palemoon/app/profile/mypal.js
index 2a090e3ca..37c4c147f 100644
--- a/application/palemoon/app/profile/mypal.js
+++ b/application/palemoon/app/profile/mypal.js
@@ -1121,6 +1121,9 @@ pref("security.csp.speccompliant", true);
 // Block insecure active content on https pages
 pref("security.mixed_content.block_active_content", true);
 
+// Disable Microsoft Family Safety MitM support
+pref("security.family_safety.mode", 0);
+
 // Override the Gecko-default value of false for Pale Moon.
 pref("plain_text.wrap_long_lines", true);