static void
postlaunch_part (const char *filename, prep_data *data, const char *device)
{
- if (guestfs_part_disk (g, device, data->params[2]) == -1)
+ if (guestfs_part_disk (g, device, data->params[1]) == -1)
prep_error (data, filename, _("failed to partition disk: %s"),
guestfs_last_error (g));
}