diff --git a/encrypt-swap-Ubuntu-20.04.md b/encrypt-swap-Ubuntu-20.04.md
index 6424bc2..a5bbde0 100644
--- a/encrypt-swap-Ubuntu-20.04.md
+++ b/encrypt-swap-Ubuntu-20.04.md
@@ -12,10 +12,12 @@ cryptsetup open /dev/<device> cryptswap
 mkswap /dev/mapper/cryptswap
 ~~~
 
-edit : /etc/default/grub
+/!\ le point ci-dessous est sans doute inutile
+
+* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to remove resume part wich is now manage by initramfs
 
 ~~~
-GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=4fd1ffc-6d5b-450a-9737-abf1ffb80b1"
+GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
 ~~~
 
 ~~~
@@ -63,6 +65,12 @@ cryptsetup: WARNING: Couln't determine root device
 swapoff /dev/mapper/cryptswap1
 ~~~
 
+* Undo the existing mapping.
+
+~~~
+cryptsetup luksClose /dev/mapper/cryptswap
+~~~
+
 * remove your encrypt swap device define in your /etc/crypttab 
 
 * ajust /etc/fstab to use your real swap partition 
@@ -71,7 +79,9 @@ swapoff /dev/mapper/cryptswap1
 /dev/nvme0n1p2   none   swap   discard   0   0
 ~~~
 
-* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to
+/!\ le point ci-dessous est sans doute inutile
+
+* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to point to your real partition
 
 ~~~
 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/nvme0n1p2"