diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index 97acbf826f9427b06e0a54679b30269ce7b695f5..aeadcd0c72816612cd5c1ca1199fe2a363c637f4 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -3362,3 +3362,5 @@ 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