diff --git a/prefs/disablemozilla.yaml b/prefs/disablemozilla.yaml
index 388be59fa..8e80fc91f 100644
--- a/prefs/disablemozilla.yaml
+++ b/prefs/disablemozilla.yaml
@@ -41,3 +41,6 @@
 - name: sidebar.verticalTabs.dragToPinPromo.dismissed
   value: true
   locked: true
+
+- name: browser.taskbarTabs.enabled
+  value: false