rules mail role

I need to send a mail to users of particular roles. The intention is, just as in the permission system, that if a user has any role from the list of the selected roles, that he gets the mail. The mail is not sent. It only works if I select only one role.

It looks to me like the logic to combine the roles is AND, thus, that only users that have all roles get the mail, and there are no such users. Instead, I need OR. There seems to be no way in the rules interface to select that.

Suggestions?