The present study examined how players used the stop button in a multi-line slot machine and why they used it. It included 30 undergraduate students and 31 community-based regular slot machine gamblers. Results did not find any evidence that using the stop button was related to having illusions of control. Those who believed the stop button to be an effective feature did not differ in how often they used it compared to those who did not have such beliefs. However, the use of the stop button was related to faster spins. Participants used it more often in situations where its previous use had resulted in a winning outcome.