How to change name of attachments in email alert action?

Hi. In 6.2 in alerts with email action all CSV Attachments had name like "splunk_results.csv" by default. After installation of 6.3 default name was changed to $name$ token(name of alert). If I use russian language in alert name I got something like this in half of cases: "п║п©п╦я│п╬п╨_п╫п╬п╡я▀я┘_я┐я│я┌п╟п╫п╬п╡п╬п╨_п╥п╟п©я-2015-10-20.csv" So how can I rename name of attached CSV file?