diff --git a/pkgs/by-name/en/enigma/package.nix b/pkgs/by-name/en/enigma/package.nix
index 256a65ed94253..d63a2dd350814 100644
--- a/pkgs/by-name/en/enigma/package.nix
+++ b/pkgs/by-name/en/enigma/package.nix
@@ -1,23 +1,55 @@
-{ lib, stdenv, fetchurl, fetchpatch, makeWrapper, pkg-config, gettext, imagemagick, curl, libpng, SDL2, SDL2_image, SDL2_mixer, SDL2_ttf, xercesc, xdg-utils, hicolor-icon-theme }:
-stdenv.mkDerivation rec {
+{
+  lib,
+  stdenv,
+  fetchurl,
+  fetchpatch,
+  makeWrapper,
+  pkg-config,
+  gettext,
+  imagemagick,
+  curl,
+  libpng,
+  SDL2,
+  SDL2_image,
+  SDL2_mixer,
+  SDL2_ttf,
+  xercesc,
+  xdg-utils,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
   pname = "enigma";
   version = "1.30";
 
   src = fetchurl {
-    url = "https://github.com/Enigma-Game/Enigma/releases/download/${version}/Enigma-${version}-src.tar.gz";
-    sha256 = "rmS5H7wrEJcAcdDXjtW07enuOGjeLm6VaVRvxYQ3+K8=";
+    url = "https://github.com/Enigma-Game/Enigma/releases/download/${finalAttrs.version}/Enigma-${finalAttrs.version}-src.tar.gz";
+    hash = "sha256-rmS5H7wrEJcAcdDXjtW07enuOGjeLm6VaVRvxYQ3+K8=";
   };
 
   patches = [
     # fix format string security warning (turned into error)
     (fetchpatch {
       url = "https://github.com/Enigma-Game/Enigma/pull/70/commits/d25051eb6228c885e779a9674f8ee3979da30663.patch";
-      sha256 = "L5C4NCZDDUKji9Tg4geKaiw3CkSY6rCoawqGKqR4dFM=";
+      hash = "sha256-L5C4NCZDDUKji9Tg4geKaiw3CkSY6rCoawqGKqR4dFM=";
     })
   ];
 
-  nativeBuildInputs = [ pkg-config gettext makeWrapper imagemagick ];
-  buildInputs = [ SDL2 SDL2_image SDL2_mixer SDL2_ttf libpng xercesc curl xdg-utils ];
+  nativeBuildInputs = [
+    pkg-config
+    gettext
+    makeWrapper
+    imagemagick
+  ];
+  buildInputs = [
+    SDL2
+    SDL2_image
+    SDL2_mixer
+    SDL2_ttf
+    libpng
+    xercesc
+    curl
+    xdg-utils
+  ];
 
   # The configure script of enigma uses pkg-config to determine the header
   # directories of SDL2. However, pkg-config only returns the path to the core
@@ -38,10 +70,13 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     description = "Puzzle game inspired by Oxyd on the Atari ST and Rock'n'Roll on the Amiga";
     mainProgram = "enigma";
-    license = with licenses; [ gpl2Plus free ]; # source + bundles libs + art
+    license = with licenses; [
+      gpl2
+      free
+    ]; # source + bundles libs + art
     platforms = platforms.unix;
     broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ iblech ];
     homepage = "https://www.nongnu.org/enigma/";
   };
-}
+})