diff --git a/pkgs/misc/themes/arc/default.nix b/pkgs/misc/themes/arc/default.nix
index b5e7dff2d6a..adbee8a09f6 100644
--- a/pkgs/misc/themes/arc/default.nix
+++ b/pkgs/misc/themes/arc/default.nix
@@ -1,12 +1,8 @@
 { stdenv, fetchFromGitHub, sassc, autoreconfHook, pkgconfig, gtk3, gnome3
 , gtk-engine-murrine, optipng, inkscape }:
 
-let
-  pname = "arc-theme";
-in
-
 stdenv.mkDerivation rec {
-  name = "${pname}-${version}";
+  pname = "arc-theme";
   version = "20190213";
 
   src = fetchFromGitHub {