diff --git a/install.sh b/install.sh
index 0362d38..aae9dd5 100644
--- a/install.sh
+++ b/install.sh
@@ -191,8 +191,8 @@ sed -i 's/#\(GRUB_ENABLE_CRYPTODISK=y\)/\1/' /mnt/etc/default/grub
 echo "" >> /mnt/etc/default/grub
 echo -e "# Booting with BTRFS subvolume\nGRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION=true" >> /mnt/etc/default/grub
 sed -i 's# part_msdos##g' /mnt/etc/default/grub
-sed -i 's#"rootflags=subvol=${rootsubvol} ##g' /mnt/etc/grub.d/10_linux
-sed -i 's#"rootflags=subvol=${rootsubvol} ##g' /mnt/etc/grub.d/20_linux_xen
+sed -i 's#rootflags=subvol=${rootsubvol} ##g' /mnt/etc/grub.d/10_linux
+sed -i 's#rootflags=subvol=${rootsubvol} ##g' /mnt/etc/grub.d/20_linux_xen
 
 # Adding keyfile to the initramfs to avoid double password.
 dd bs=512 count=4 if=/dev/random of=/mnt/cryptkey/.root.key iflag=fullblock &>/dev/null