One More Notch or a Fresh Spin

A carnival wheel has six equal slots on its rim, and exactly two adjacent slots hide a joke-shop shock buzzer. After a hard random spin, the player before you pressed the slot under the pointer — no buzz. Now it's your turn: the pointer will click forward to the very next slot, unless you request a fresh random spin first. Which option gives you the better chance of avoiding the buzzer, and what are the two probabilities?