diff --git a/utils/pkgs/ykfde/scripts/ykfde_enroll b/utils/pkgs/ykfde/scripts/ykfde_enroll
index 58ffb94..95cd7cb 100755
--- a/utils/pkgs/ykfde/scripts/ykfde_enroll
+++ b/utils/pkgs/ykfde/scripts/ykfde_enroll
@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-nix-shell https://github.com/sgillespie/nixos-yubikey-luks/archive/master.tar.gz
+echo "start in nix-shell https://github.com/sgillespie/nixos-yubikey-luks/archive/master.tar.gz"
 
 # sanitize environment
 YKFDE_SLOT=2