--- a/toolkit/components/telemetry/TelemetryEnvironment.jsm
+++ b/toolkit/components/telemetry/TelemetryEnvironment.jsm
@@ -196,16 +196,17 @@ const DEFAULT_ENVIRONMENT_PREFS = new Ma
   ["browser.cache.memory.enable", {what: RECORD_PREF_VALUE}],
   ["browser.cache.offline.enable", {what: RECORD_PREF_VALUE}],
   ["browser.formfill.enable", {what: RECORD_PREF_VALUE}],
   ["browser.newtabpage.enabled", {what: RECORD_PREF_VALUE}],
   ["browser.newtabpage.enhanced", {what: RECORD_PREF_VALUE}],
   ["browser.shell.checkDefaultBrowser", {what: RECORD_PREF_VALUE}],
   ["browser.search.ignoredJAREngines", {what: RECORD_DEFAULTPREF_VALUE}],
   ["browser.search.suggest.enabled", {what: RECORD_PREF_VALUE}],
+  ["browser.search.widget.inNavBar", {what: RECORD_PREF_VALUE}],
   ["browser.startup.homepage", {what: RECORD_PREF_STATE}],
   ["browser.startup.page", {what: RECORD_PREF_VALUE}],
   ["toolkit.cosmeticAnimations.enabled", {what: RECORD_PREF_VALUE}],
   ["browser.urlbar.suggest.searches", {what: RECORD_PREF_VALUE}],
   ["browser.urlbar.userMadeSearchSuggestionsChoice", {what: RECORD_PREF_VALUE}],
   ["devtools.chrome.enabled", {what: RECORD_PREF_VALUE}],
   ["devtools.debugger.enabled", {what: RECORD_PREF_VALUE}],
   ["devtools.debugger.remote-enabled", {what: RECORD_PREF_VALUE}],