diff --git a/pkgs/by-name/gt/gtk-server/package.nix b/pkgs/by-name/gt/gtk-server/package.nix
index c9c247244ee7..db0708952716 100644
--- a/pkgs/by-name/gt/gtk-server/package.nix
+++ b/pkgs/by-name/gt/gtk-server/package.nix
@@ -39,5 +39,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.gpl2Plus;
     maintainers = [ ];
     platforms = lib.platforms.linux;
+    mainProgram = "gtk-server";
   };
 })