Automated systems have come into widespread use since the turn of this century. Society is able to enjoy the benefit of the automated systems such as solution for shrinking workforces and mitigation of human fatigue. Here I would like to suggest a question: would you truly trust the automation if you bought a self-driving car? All drivers are not always say yes. Trust is one of factors when it comes to considering the interaction between automated systems and mankind. In this sturdy, we estimate human mistrust in shared control. We build an experiment to estimate trust-related behaviour, and we define mistrust as human intervention for the automatic operation.