Error on removing a machine

[nicolas-brousse]

When I remove a machine I have this error:

/ # docker-machine rm tmp
About to remove tmp
WARNING: This action will delete both local reference and remote instance.
Are you sure? (y/n): y
Error removing host "tmp": unexpected end of JSON input

This error is annoying because server is really removed, but it stay listed on Docker machine.

/ # docker-machine ls
NAME   ACTIVE   DRIVER           STATE   URL   SWARM   DOCKER    ERRORS
tmp    -        scaleway(VC1S)   Error                 Unknown   StatusCode: 404, Type: unknown_resource, APIMessage: "898eac01-bf4f-40ef-ab4e-0cb35621e3fa" not found