diff --git a/README.md b/README.md
index 0e8bf53..44e555f 100644
--- a/README.md
+++ b/README.md
@@ -38,9 +38,8 @@ For setting up different locale than pl check official guide
 ### ----------------- encryption (optional) ------------------  
   
 ### Setup the encryption of the system, don't use letters outside en-us keyboard like ąęć etc. for password  
-### Grub should now support luks2
-## pbkdf-memory is given in KB, and here it is about 4GiB (it is maximum amount allowed by cryptsetup, check if you have enaugh RAM)
->cryptsetup -c=aes-xts-plain64 --key-size=512 --hash=sha512 --iter-time=3000 --pbkdf=argon2id --pbkdf-parallel=4 --pbkdf-memory=4194304 --use-random luksFormat --type=luks2 /dev/sdX2  
+### Grub have partial support for luks2 now, but can handle only pbkdf2
+>cryptsetup -c=aes-xts-plain64 --key-size=512 --hash=sha512 --iter-time=3000 --pbkdf=pbkdf2 --use-random luksFormat --type=luks2 /dev/sdX2  
 
 >cryptsetup luksOpen /dev/sdX2 MainPart