diff --git a/modules/firefox.nix b/modules/firefox.nix
index 8141c56..a3331fd 100644
--- a/modules/firefox.nix
+++ b/modules/firefox.nix
@@ -120,10 +120,6 @@
     // use same search engine (duckduckgo) for private browsing
     lockPref("browser.search.separatePrivateDefault", false);
 
-    // enable letterboxing & resist fingerprinting
-    lockPref("privacy.resistFingerprinting.letterboxing", true);
-    lockPref("privacy.resistFingerprinting", true);
-
     // stop extensions connecting to the internet
     lockPref(
       "extensions.webextensions.base-content-security-policy",