diff --git a/msys2/default.nix b/msys2/default.nix
index e230405..6b9c235 100644
--- a/msys2/default.nix
+++ b/msys2/default.nix
@@ -25,7 +25,7 @@ let
     exec ${pkgs.wineWowPackages.stable}/bin/wine64 $@
     '';
 in {
-  makeMsys2Package = { name, version, src, prepare, depends }: pkgs.stdenvNoCC.mkDerivation {
+  makeMsys2Package = { name, version, src, depends, prepare ? "" }: pkgs.stdenvNoCC.mkDerivation {
     pname = "${name}-msys2-pkg";
     inherit version;
     nativeBuildInputs = [