An anti-oscillation mechanism is provided for a caster wheel assembly of a ride-on vehicle. The anti-oscillating mechanism has a stop, a first cap, a second cap and a bias member. The stop is positioned within the frame of the ride-on vehicle. The first cap has a wall that abuts the stop. The second cap has a wall that abuts a stem of the caster wheel assembly. The bias member has a first end that engages the first cap, and a second end that engages the second cap. The bias member exerts a force on the second cap, which exerts a force on the stem to push the caster wheel assembly toward a ground to help prevent a wheel of the caster wheel assembly from lifting off the ground.