diff --git a/pkgs/npiperelay/default.nix b/pkgs/npiperelay/default.nix
index 0738d59..8cb7a68 100644
--- a/pkgs/npiperelay/default.nix
+++ b/pkgs/npiperelay/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, mkDerivation, gzip, gnutar }:
+{ lib, stdenv, fetchurl, gzip, gnutar }:
 
 let
   version = "1.6.3";
@@ -16,7 +16,7 @@ let
     # };
   };
 
-in mkDerivation rec {
+in stdenv.mkDerivation rec {
   pname = "npiperelay";
   inherit version;