diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index 89b8b830e8f53582dd9910b0172098d31a8d8967..51bdc847823cb95f811b7e9d2d864b9aacf0e364 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -3375,3 +3375,5 @@ pref("toolkit.contentRelevancy.enabled", false);
 pref("toolkit.contentRelevancy.ingestEnabled", false);
 // Pref to enable extra logging for the content relevancy feature
 pref("toolkit.contentRelevancy.log", false);
+
+#include zen-browser.js
