diff --git a/pkgs/by-name/mo/monoDLLFixer/package.nix b/pkgs/by-name/mo/monoDLLFixer/package.nix
index 61df37e1fda8..d3bcc56484c0 100644
--- a/pkgs/by-name/mo/monoDLLFixer/package.nix
+++ b/pkgs/by-name/mo/monoDLLFixer/package.nix
@@ -1,6 +1,11 @@
-{ stdenv, perl }:
+{
+  lib,
+  stdenv,
+  perl,
+}:
 stdenv.mkDerivation {
-  name = "mono-dll-fixer";
+  pname = "mono-dll-fixer";
+  version = lib.trivial.release;
   dllFixer = ./dll-fixer.pl;
   dontUnpack = true;
   installPhase = ''