diff --git a/pkgs/by-name/ar/argbash/package.nix b/pkgs/by-name/ar/argbash/package.nix
index 1d8bcc797194..4a4eb2ec8b69 100644
--- a/pkgs/by-name/ar/argbash/package.nix
+++ b/pkgs/by-name/ar/argbash/package.nix
@@ -48,5 +48,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.bsd3;
     maintainers = [ ];
     platforms = lib.platforms.all;
+    mainProgram = "argbash";
   };
 })