The finance committee took action today to make sure there are no loopholes in the county ordinance.
The vote was 11 to 1.
Critics of the video games say they are an immoral way to help fund government.
Manufacturers and distributors of the video betting machines say they create jobs and tax revenue.
"The decision to allow operator won video lottery terminals would benefit industry and the public," said Paul Duda, Wells Gardner Electronics.
"It's a bad idea, it's a bad way to fund government, it's immoral and in many states it's illegal," said Tony Peraica, (R) Cook County commissioner.
The full county board is scheduled to vote on the reinforcement of the ban next week.