diff --git a/overlays/nixpkgs/firefox.nix b/overlays/nixpkgs/firefox.nix
index e410ce7..7f9fda5 100644
--- a/overlays/nixpkgs/firefox.nix
+++ b/overlays/nixpkgs/firefox.nix
@@ -8,5 +8,5 @@
       };
     };
   in
-    sandboxed-firefox-esr.config.script;
+    [sandboxed-firefox-esr];
 }