The Club Keno Doubler Days promotion will be extended to Oct. 31 and enhanced for players, the Michigan Lottery announced today.

The Doubler Days promotion for Club Keno began on Sept. 1 and was scheduled to end Sunday. The Lottery extended the promotion to Oct. 31 after discovering this week that an error in the promotion’s programming resulted in a reduced number of Doubler messages being printed on certain Club Keno tickets.

The promotion error was corrected Monday. The error did not affect the Club Keno drawings, or the Fantasy 5 or Lotto 47 Doubler Days promotions.

The Doubler feature will be printed at random on tickets and will double prizes, without any additional cost to players. The frequency of the Doubler messages will be increased during the extended promotion, and Club Keno Extra prizes also now will be eligible for a Doubler message. The enhanced promotion will begin Saturday.

To qualify for double winnings, tickets must be eligible Club Keno or Club Keno Extra prize winners. Receiving a Doubler message alone does not denote a win. If a player purchases a multi-draw ticket and receives a Doubler message, all eligible winnings for all the drawings on that ticket are doubled. Club Keno The Jack prizes and Club Keno Extra prizes of $500,000 are not eligible for the promotion.