diff --git a/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md b/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
index b52f1a6..ee581ff 100644
--- a/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
+++ b/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
@@ -131,13 +131,19 @@ Now ajust /etc/fstab to use your mapper, replace your swap UUID device to :
 /etc/crypttab
 
 ~~~
-/etc/crypttab   UUID=....    none luks
+swapDevice   /dev/nvme0n1p2		none	luks
 ~~~
 
 ~~~
 swapon -a
 ~~~
 
+Register these changes.
+
+~~~
+update-initramfs -u -k all
+~~~
+
 ### to be solve
 
 ~~~