diff --git a/41_snapshots-btrfs b/41_snapshots-btrfs
index e1e183b..0dddfec 100755
--- a/41_snapshots-btrfs
+++ b/41_snapshots-btrfs
@@ -111,16 +111,16 @@ fi
 ## Probe information of Root and Boot devices
 # Probe info "Root partition"
 root_device=$(${grub_probe} --target=device /) # Root device
-root_uuid=$(${grub_probe} --device "${root_device}" --target="fs_uuid" 2>/dev/null) # UUID of the root device
+root_uuid=$(${grub_probe} --device ${root_device} --target="fs_uuid" 2>/dev/null) # UUID of the root device
 root_uuid_subvolume=$(btrfs subvolume show / 2>/dev/null) || print_error "UUID of the root subvolume is not available"; # If UUID of root subvolume is not available, then exit
 root_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<< "$root_uuid_subvolume") # UUID of the root subvolume '
 # Probe info "Boot partition"
-boot_device=$(${grub_probe} --target=device "${boot_directory}") # Boot device
-boot_uuid=$(${grub_probe} --device "${boot_device}" --target="fs_uuid" 2>/dev/null) # UUID of the boot device
+boot_device=$(${grub_probe} --target=device ${boot_directory}) # Boot device
+boot_uuid=$(${grub_probe} --device ${boot_device} --target="fs_uuid" 2>/dev/null) # UUID of the boot device
 boot_uuid_subvolume=$(btrfs subvolume show "$boot_directory" 2>/dev/null) || boot_uuid_subvolume=" UUID: $root_uuid_subvolume"; # If boot folder isn't a subvolume, then UUID=root_uuid_subvolume
 boot_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<< "$boot_uuid_subvolume") # UUID of the boot subvolume '
-boot_hs=$(${grub_probe} --device "${boot_device}" --target="hints_string" 2>/dev/null) # hints string
-boot_fs=$(${grub_probe} --device "${boot_device}" --target="fs" 2>/dev/null) # Type filesystem of boot device
+boot_hs=$(${grub_probe} --device ${boot_device} --target="hints_string" 2>/dev/null) # hints string
+boot_fs=$(${grub_probe} --device ${boot_device} --target="fs" 2>/dev/null) # Type filesystem of boot device
 
 ## Parameters passed to the kernel
 kernel_parameters="$GRUB_CMDLINE_LINUX $GRUB_CMDLINE_LINUX_DEFAULT $GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS"