diff --git a/makefu/5pkgs/gen-oath-safe/default.nix b/makefu/5pkgs/gen-oath-safe/default.nix
index 344dc1a02..bad4b08a8 100644
--- a/makefu/5pkgs/gen-oath-safe/default.nix
+++ b/makefu/5pkgs/gen-oath-safe/default.nix
@@ -1,7 +1,6 @@
 { coreutils, makeWrapper, openssl, libcaca, qrencode, fetchFromGitHub, yubikey-manager, python, stdenv, ... }:
 
-builtins.trace "Warning: HTOP mode of gen-oath-safe is currently broken"
-  stdenv.mkDerivation {
+stdenv.mkDerivation {
   name = "gen-oath-safe-2017-06-30";
   src = fetchFromGitHub {
     owner = "mcepl";
@@ -24,7 +23,7 @@ builtins.trace "Warning: HTOP mode of gen-oath-safe is currently broken"
         coreutils
         openssl
         qrencode
-        #yubikey-manager
+        yubikey-manager
         libcaca
         python
       ];