diff --git a/pkgs/by-name/te/terminal-notifier/package.nix b/pkgs/by-name/te/terminal-notifier/package.nix
index 1f4e97ec2715..9cca1d289092 100644
--- a/pkgs/by-name/te/terminal-notifier/package.nix
+++ b/pkgs/by-name/te/terminal-notifier/package.nix
@@ -35,5 +35,6 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/julienXX/terminal-notifier";
     license = lib.licenses.mit;
     platforms = lib.platforms.darwin;
+    mainProgram = "terminal-notifier";
   };
 }