diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index ef8b62bb64e8..bc75b7f824ae 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -332,10 +332,6 @@ pref("browser.startup.windowsLaunchOnLogin.disableLaunchOnLoginPrompt", false);
 // Show an upgrade dialog on major upgrades.
 pref("browser.startup.upgradeDialog.enabled", false);
 
-// Don't create the hidden window during startup on
-// platforms that don't always need it (Win/Linux).
-pref("toolkit.lazyHiddenWindow", true);
-
 pref("browser.chrome.site_icons", true);
 // browser.warnOnQuit == false will override all other possible prompts when quitting or restarting
 pref("browser.warnOnQuit", true);
diff --git a/mobile/android/app/geckoview-prefs.js b/mobile/android/app/geckoview-prefs.js
index d345531e42a4..429fa08b921e 100644
--- a/mobile/android/app/geckoview-prefs.js
+++ b/mobile/android/app/geckoview-prefs.js
@@ -23,9 +23,6 @@ pref("dom.ipc.keepProcessesAlive.extension", 1);
 
 pref("dom.ipc.processPrelaunch.enabled", false);
 
-// Don't create the hidden window during startup.
-pref("toolkit.lazyHiddenWindow", true);
-
 pref("geckoview.console.enabled", false);
 
 #ifdef RELEASE_OR_BETA
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index a30966f1d024..e30d66ee7424 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -3684,6 +3684,10 @@ pref("toolkit.aboutProcesses.profileDuration", 5);
   pref("toolkit.crashreporter.include_context_heap", true);
 #endif
 
+// Don't create the hidden window during startup on
+// platforms that don't always need it.
+pref("toolkit.lazyHiddenWindow", true);
+
 // Support for legacy customizations that rely on checking the
 // user profile directory for these stylesheets:
 //  * userContent.css