diff --git a/overlays/nixpak/firefox.nix b/overlays/nixpak/firefox.nix
index 3ff00a5..075b5c0 100644
--- a/overlays/nixpak/firefox.nix
+++ b/overlays/nixpak/firefox.nix
@@ -74,6 +74,14 @@
         };
       };
     };
+
+    wrappedFirefox = prev.wrapFirefox sandboxed-firefox-esr.config.env {
+      applicationName = "firefox-esr";
+      pname = "firefox-esr";
+      desktopName = "Firefox ESR";
+      icon = "firefox";
+      wmClass = "firefox-esr";
+    };
   in
-    sandboxed-firefox-esr.config.env;
+    wrappedFirefox;
 }