diff --git a/docs/alpine-desktop-setup/post-install/automatic-decryption.md b/docs/alpine-desktop-setup/post-install/automatic-decryption.md
index 9d6cd38..65882b6 100644
--- a/docs/alpine-desktop-setup/post-install/automatic-decryption.md
+++ b/docs/alpine-desktop-setup/post-install/automatic-decryption.md
@@ -5,8 +5,8 @@ Our system can utilize it's TPM2 to automatically decrypt. This can be done beca
 First off the packages `clevis` and `tpm2-tools` have to be installed:
 
 ```
-$ <nix-env -iA nixpkgs.clevis>
 # <apk add tpm2-tools>
+$ <nix-shell -p clevis>
 ```
 
 > Not yet doable (but will be don't worry ;) )