diff --git a/debian/chroot.install b/debian/chroot.install
index 867699d..3e39a70 100755
--- a/debian/chroot.install
+++ b/debian/chroot.install
@@ -125,13 +125,12 @@ mkswap -L sw01 -- /dev/mapper/"${vgname}"-swap || exit 4
 ### Root
 mkdir -p -- /target
 mountpoint -q /target            || mount -- /dev/mapper/"${vgname}"-root /target
-### Prepare an fstab file
-printf '%b\n' "/dev/mapper/${vgname}-root /           ext4 defaults                   0 0" > /tmp/target.fstab
 
 ### boot - grub
 mkdir -p -- /target/boot
 mountpoint -q /target/boot       || mount -- ${hdd}1 /target/boot
-printf '%b\n' "${hdd}1               /boot       ext3 defaults                   0 0" >> /tmp/target.fstab
+### Prepare an fstab file
+printf '%b\n' "${hdd}1               /boot       ext3 defaults                   0 0" > /tmp/target.fstab
 
 ### Prepare the base system tree according to the expected file system
 if [ "${manage_btrfs}" -eq 0 ]; then
@@ -139,7 +138,12 @@ if [ "${manage_btrfs}" -eq 0 ]; then
 	wget -O /tmp/part.btrfs.sh "https://git.101010.fr/gardouille-dotfiles/scripts/raw/master/debian/part.btrfs.sh"
 	#### Create several subvolumes
 	chmod +x /tmp/part.btrfs.sh && /tmp/part.btrfs.sh
+
+	#### root
+	grep "btrfs" /etc/mtab >> /tmp/target.fstab
 else  ### Or for ext4, create mountpoint and mount LV
+	#### root
+	printf '%b\n' "/dev/mapper/${vgname}-root /           ext4 defaults                   0 0" >> /tmp/target.fstab
 	#### home LV
 	mkdir -p -- /target/home
 	mountpoint -q /target/home       || mount -- /dev/mapper/"${vgname}"-home /target/home