diff --git a/common/dotfiles/firefox.nix b/common/dotfiles/firefox.nix
index 59244782..70ed7b50 100644
--- a/common/dotfiles/firefox.nix
+++ b/common/dotfiles/firefox.nix
@@ -1,41 +1,45 @@
 { config, pkgs, ... }: {
-  programs.firefox = {
+  
+  pkgs.firefox.override (args: args // {
+    extraPrefs = ''
+      lockPref("extension.pocket.enabled", false);
+      lockPref("toolkit.telemetry.pioneer-new-studies-availble", false);
+      lockPref("datareporting.healthreport.uploadEnabled", false);
+      lockPref("datareporting.healthreport.infoURL", null);
+      lockPref("toolkit.telemetry.server", null);
+      lockPref("browser.newtabpage.activity-stream.feeds.telemetry", false);
+      lockPref("browser.newtabpage.activity-stream.telemetry", false);
+      lockPref("browser.ping-centre.telemetry", false);
+      lockPref("toolkit.telemetry.enabled", false);
+      lockPref("toolkit.telemetry.firstShutdownPing.enabled", false);
+      lockPref("toolkit.telemetry.hybridContent.enabled", false);
+      lockPref("toolkit.telemetry.newProfilePing.enabled", false);
+      lockPref("toolkit.telemetry.shutdownPingSender.enabled", false);
+      lockPref("toolkit.telemetry.updatePing.enabled", false);
+      lockPref("toolkit.telemetry.reportingpolicy.firstRun", false);
+      lockPref("toolkit.telemetry.unified", false);
+      lockPref("toolkit.telemetry.archive.enabled", false);
+      lockPref("devtools.onboarding.telemetry.logged", false);
+      lockPref("toolkit.telemetry.bhrPing.enabled", false);
+      lockPref("datareporting.policy.dataSubmissionEnabled", false);
+      lockPref("datareporting.sessions.current.clean", true);
+      lockPref("browser.startup.homepage", https://dir.sysctl.io);
+      lockPref("browser.search.region", US);
+      lockPref("browser.search.isUS", false;
+      lockPref("distribution.searchplugins.defaultLocale", en-US);
+      lockPref("general.useragent.locale", en-US);
+      lockPref("browser.bookmarks.showMobileBookmarks", false);
+      lockPref("browser.newtabpage.enabled", false);
+      lockPref("services.sync.prefs.sync.browser.newtabpage.enabled", false);
+    ''
+  };
+   
+   programs.firefox = {
     enable = true;
 
     profiles.default = {
       isDefault = true;
       name = "default";
-      settings = {
-        "extension.pocket.enabled" = "false";
-        "toolkit.telemetry.pioneer-new-studies-availble" = "false";
-        "datareporting.healthreport.uploadEnabled" = "false";
-        "datareporting.healthreport.infoURL" = "null";
-        "toolkit.telemetry.server" = "null";
-        "browser.newtabpage.activity-stream.feeds.telemetry" = "false";
-        "browser.newtabpage.activity-stream.telemetry" = "false";
-        "browser.ping-centre.telemetry" = "false";
-        "toolkit.telemetry.enabled" = "false";
-        "toolkit.telemetry.firstShutdownPing.enabled" = "false";
-        "toolkit.telemetry.hybridContent.enabled" = "false";
-        "toolkit.telemetry.newProfilePing.enabled" = "false";
-        "toolkit.telemetry.shutdownPingSender.enabled" = "false";
-        "toolkit.telemetry.updatePing.enabled" = "false";
-        "toolkit.telemetry.reportingpolicy.firstRun" = "false";
-        "toolkit.telemetry.unified" = "false";
-        "toolkit.telemetry.archive.enabled" = "false";
-        "devtools.onboarding.telemetry.logged" = "false";
-        "toolkit.telemetry.bhrPing.enabled" = "false";
-        "datareporting.policy.dataSubmissionEnabled" = "false";
-        "datareporting.sessions.current.clean" = "true";
-        "browser.startup.homepage" = "https://dir.sysctl.io";
-        "browser.search.region" = "US";
-        "browser.search.isUS" = false;
-        "distribution.searchplugins.defaultLocale" = "en-US";
-        "general.useragent.locale" = "en-US";
-        "browser.bookmarks.showMobileBookmarks" = "false";
-        "browser.newtabpage.enabled" = "false";
-        "services.sync.prefs.sync.browser.newtabpage.enabled" = "false";
-      };
 
       # https://nur.nix-community.org/repos/rycee/
       extensions =  with pkgs.nur.repos.rycee.firefox-addons; [