diff --git a/pkgs/letsencrypt-ca.nix b/pkgs/letsencrypt-ca.nix
index bc7f897..52ed5b3 100644
--- a/pkgs/letsencrypt-ca.nix
+++ b/pkgs/letsencrypt-ca.nix
@@ -17,8 +17,7 @@ in stdenv.mkDerivation {
   phases = [ "installPhase" ];
 
   installPhase = ''
-    mkdir -pv $out
-    cp -v $src $out/ca.pem
+    cp -v $src $out
   '';
 
   meta = {