diff --git a/pkgs/by-name/mk/mkvtoolnix/package.nix b/pkgs/by-name/mk/mkvtoolnix/package.nix
index c911a7d90e98..ead5f5734f45 100644
--- a/pkgs/by-name/mk/mkvtoolnix/package.nix
+++ b/pkgs/by-name/mk/mkvtoolnix/package.nix
@@ -64,6 +64,8 @@ stdenv.mkDerivation (finalAttrs: {
     };
   };
 
+  __structuredAttrs = true;
+
   nativeBuildInputs = [
     autoreconfHook
     docbook_xsl