diff --git a/config/chroot_local-includes/usr/share/tails/tor-browser-prefs.js b/config/chroot_local-includes/usr/share/tails/tor-browser-prefs.js
index 96a305f1eb762dc74249c6963ebe86c273b585ed..2504b8887ac2ec210887ca24e506e1e2ee9280ce 100644
--- a/config/chroot_local-includes/usr/share/tails/tor-browser-prefs.js
+++ b/config/chroot_local-includes/usr/share/tails/tor-browser-prefs.js
@@ -18,7 +18,6 @@ pref("extensions.torbutton.prompted_language", true);
 
 // Tails-specific Torbutton preferences
 pref("extensions.torbutton.lastUpdateCheck", "9999999999.999");
-pref("extensions.torbutton.test_enabled", false); // Tails-specific
 pref("extensions.torbutton.control_port", 9051);
 
 // These must be set to the same value to prevent Torbutton from