grub-install -> efibootmgr: option requires an argument -- 'd'

While upgrading my 14.04 system today, I saw the following footcloth in the apt logs:

Setting up shim-signed (1.32~14.04.2+0.9+1474479173.6c180c6-1ubuntu1) ...
Installing for x86_64-efi platform.
efibootmgr: option requires an argument -- 'd'
efibootmgr version 0.5.4
usage: efibootmgr [options]
        -a | --active sets bootnum active
        -A | --inactive sets bootnum inactive
        -b | --bootnum XXXX modify BootXXXX (hex)
        -B | --delete-bootnum delete bootnum (hex)
        -c | --create create new variable bootnum and add to bootorder
        -d | --disk disk (defaults to /dev/sda) containing loader
        -e | --edd [1|3|-1] force EDD 1.0 or 3.0 creation variables, or guess
        -E | --device num EDD 1.0 device number (defaults to 0x80)
        -g | --gpt force disk with invalid PMBR to be treated as GPT
        -H | --acpi_hid XXXX set the ACPI HID (used with -i)
        -i | --iface name create a netboot entry for the named interface
        -l | --loader name (defaults to \elilo.efi)
        -L | --label label Boot manager display label (defaults to "Linux")
        -n | --bootnext XXXX set BootNext to XXXX (hex)
        -N | --delete-bootnext delete BootNext
        -o | --bootorder XXXX,YYYY,ZZZZ,... explicitly set BootOrder (hex)
        -O | --delete-bootorder delete BootOrder
        -p | --part part (defaults to 1) containing loader
        -q | --quiet be quiet
           | --test filename don't write to NVRAM, write to filename.
        -t | --timeout seconds set boot manager timeout waiting for user input.
        -T | --delete-timeout delete Timeout.
        -u | --unicode | --UCS-2 pass extra args as UCS-2 (default is ASCII)
        -U | --acpi_uid XXXX set the ACPI UID (used with -i)
        -v | --verbose print additional information
        -V | --version return version and exit
        -w | --write-signature write unique sig to MBR if needed
        -@ | --append-binary-args file append extra args from file (use "-" for stdin)
Installation finished. No error reported.
No DKMS packages installed: not changing Secure Boot validation state.

This same footcloth is printed when I'm attempting manual
# grub-install --recheck --no-floppy /dev/md1

/dev/md1 is a mdadm RAID1 device.

# lsblk -nbo NAME,SIZE,FSTYPE,UUID,MOUNTPOINT
sda 500107862016
├─sda1 272629760 linux_raid_member 8738f3e7-9189-6e1d-e368-bf24bd0fce41
│ └─md0 272564224 vfat BC88-CB0B /boot/efi
├─sda2 21088960512 linux_raid_member d36f3bf5-f320-055f-317d-388008f835aa
│ └─md1 21072052224 ext4 863afe5d-f8fe-4078-a194-5018e4a0f428 /
├─sda3 2147483648 swap 74889c32-6f20-4df0-8286-783679662202 [SWAP]
└─sda4 476456157184 linux_raid_member 5aef7b1d-9c6d-c2a4-35da-8c23a0a15a85
  └─md2 476456091648 ext3 01a84aa3-b283-4691-a5ad-ac8ec8ae7641 /home
sdb 500107862016
├─sdb1 272629760 linux_raid_member 8738f3e7-9189-6e1d-e368-bf24bd0fce41
│ └─md0 272564224 vfat BC88-CB0B /boot/efi
├─sdb2 21088960512 linux_raid_member d36f3bf5-f320-055f-317d-388008f835aa
│ └─md1 21072052224 ext4 863afe5d-f8fe-4078-a194-5018e4a0f428 /
├─sdb3 2147483648 swap 0fb5dea5-43c3-4489-bdae-063daf4e9965 [SWAP]
└─sdb4 476456157184 linux_raid_member 5aef7b1d-9c6d-c2a4-35da-8c23a0a15a85
  └─md2 476456091648 ext3 01a84aa3-b283-4691-a5ad-ac8ec8ae7641 /home