diff --git a/pkgs/by-name/he/hello-cpp/package.nix b/pkgs/by-name/he/hello-cpp/package.nix
index 7e2259fb1aea..6951fea203ce 100644
--- a/pkgs/by-name/he/hello-cpp/package.nix
+++ b/pkgs/by-name/he/hello-cpp/package.nix
@@ -18,5 +18,6 @@ stdenv.mkDerivation {
     platforms = lib.platforms.all;
     maintainers = stdenv.meta.maintainers or [ ];
     mainProgram = "hello-cpp";
+    license = lib.licenses.mit;
   };
 }