diff --git a/etc/firefox/policies/policies.json b/etc/firefox/policies/policies.json
index baed63c4..1c8a1783 100644
--- a/etc/firefox/policies/policies.json
+++ b/etc/firefox/policies/policies.json
@@ -254,7 +254,7 @@
 			"@ublacklist": {
 				"blocked_install_message": "uBlackList",
 				"default_area": "menupanel",
-				"install_url": "https://addons.mozilla.org/firefox/downloads/latest//latest.xpi",
+				"install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublacklist/latest.xpi",
 				"installation_mode": "normal_installed",
 				"private_browsing": true
 			},