diff --git a/etc/firefox/policies/policies.json b/etc/firefox/policies/policies.json
index cd0f395d..c0b93a4d 100644
--- a/etc/firefox/policies/policies.json
+++ b/etc/firefox/policies/policies.json
@@ -51,8 +51,9 @@
         "installation_mode": "force_installed"
       },
       "wayback_machine@mozilla.org": {
+        "blocked_install_message": "https://bugzilla.mozilla.org/show_bug.cgi?id=1497075 hermostuttaa Amindaa.",
         "install_url": "https://addons.mozilla.org/firefox/downloads/latest/wayback-machine_new/latest.xpi",
-        "installation_mode": "normal_installed"
+        "installation_mode": "blocked"
       },
       "{3c078156-979c-498b-8990-85f7987dd929}": {
         "install_url": "https://addons.mozilla.org/firefox/downloads/latest/sidebery/latest.xpi",