diff --git a/pkgs/applications/emulators/atari++/default.nix b/pkgs/applications/emulators/atari++/default.nix
index 7716e86ed183..f78bf7e4cf06 100644
--- a/pkgs/applications/emulators/atari++/default.nix
+++ b/pkgs/applications/emulators/atari++/default.nix
@@ -1,32 +1,49 @@
-{ lib, stdenv, fetchurl, libSM, libX11, libICE, SDL, alsa-lib, gcc-unwrapped, libXext }:
+{ lib
+, stdenv
+, fetchurl
+, SDL
+, alsa-lib
+, gcc-unwrapped
+, libICE
+, libSM
+, libX11
+, libXext
+}:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "atari++";
   version = "1.85";
 
   src = fetchurl {
-    url = "http://www.xl-project.com/download/${pname}_${version}.tar.gz";
-    sha256 = "sha256-LbGTVUs1XXR+QfDhCxX9UMkQ3bnk4z0ckl94Cwwe9IQ=";
+    url = "http://www.xl-project.com/download/atari++_${finalAttrs.version}.tar.gz";
+    hash = "sha256-LbGTVUs1XXR+QfDhCxX9UMkQ3bnk4z0ckl94Cwwe9IQ=";
   };
 
-  buildInputs = [ libSM libX11 SDL libICE alsa-lib gcc-unwrapped libXext ];
+  buildInputs = [
+    SDL
+    alsa-lib
+    gcc-unwrapped
+    libICE
+    libSM
+    libX11
+    libXext
+  ];
 
   postFixup = ''
-    patchelf --set-rpath ${lib.makeLibraryPath buildInputs} "$out/bin/atari++"
+    patchelf --set-rpath ${lib.makeLibraryPath finalAttrs.buildInputs} "$out/bin/atari++"
   '';
 
   meta = with lib; {
     homepage = "http://www.xl-project.com/";
     description = "An enhanced, cycle-accurated Atari emulator";
     longDescription = ''
-      The Atari++ Emulator is a Unix based emulator of the Atari eight
-      bit computers, namely the Atari 400 and 800, the Atari 400XL,
-      800XL and 130XE, and the Atari 5200 game console. The emulator
-      is auto-configurable and will compile on a variety of systems
-      (Linux, Solaris, Irix).
+      The Atari++ Emulator is a Unix based emulator of the Atari eight bit
+      computers, namely the Atari 400 and 800, the Atari 400XL, 800XL and 130XE,
+      and the Atari 5200 game console. The emulator is auto-configurable and
+      will compile on a variety of systems (Linux, Solaris, Irix).
     '';
     maintainers = [ maintainers.AndersonTorres ];
     license = licenses.gpl2Plus;
     platforms = lib.platforms.linux;
   };
-}
+})