diff --git a/nixos/desktop/package-configs/firefox/default.nix b/nixos/desktop/package-configs/firefox/default.nix
index 6bc5aa1..e16de37 100644
--- a/nixos/desktop/package-configs/firefox/default.nix
+++ b/nixos/desktop/package-configs/firefox/default.nix
@@ -46,7 +46,7 @@
         # "*".installation_mode = "blocked"; # blocks all addons except the ones specified below
         # Sideberry:
         "{3c078156-979c-498b-8990-85f7987dd929}" = {
-          install_url = "https://addons.mozilla.org/firefox/downloads/latest/sideberry/latest.xpi";
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/sidebery/latest.xpi";
           installation_mode = "force_installed";
         };
         # Privacy Badger: