custom-charset goal ?

[Mem5]

I put seven ?1 :

oclHashcat-lite64.exe --custom-charset1 ?d?l?u xxxxxxxx ?1?1?1?1?1?1?1
oclHashcat-lite v0.9 by atom starting...
(...)
Plain.Mask...: ?1?1?1?1?1?1
Plain.Text...: **uX6g
Plain.Length.: 6
(...)
[s]tatus [p]ause [r]esume [q]uit =>
(...)
Plain.Mask...: ?1?1?1?1?1?1?1
Plain.Text...: ***0000
Plain.Length.: 7

It seems that ocl-lite increments itself the mask ?!