diff --git a/pkgs/by-name/he/hello/package.nix b/pkgs/by-name/he/hello/package.nix
index e9b9e4f4b96e..f1b056faf640 100644
--- a/pkgs/by-name/he/hello/package.nix
+++ b/pkgs/by-name/he/hello/package.nix
@@ -40,6 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
     changelog = "https://git.savannah.gnu.org/cgit/hello.git/plain/NEWS?h=v${finalAttrs.version}";
     license = licenses.gpl3Plus;
     maintainers = [ maintainers.eelco ];
+    mainProgram = "hello";
     platforms = platforms.all;
   };
 })