pkg_add stems not working for some packages

[Erling Westenvik]

I can do:

   $ sudo pkg_add vim--gtk2

but not:

   $ sudo pkg_add mutt--sasl-sidebar-slang-compressed
   Can't find mutt--sasl-sidebar-slang-compressed

Too many dashes after the stems-indicator? Running OpenBSD 4.9
GENERIC.MP#794 i386.

-- 
Regards,
Erling