Tower of Hanoi in Scala

Had a little fun with scala after 2 months, an implementation of Tower of Hanoi:

object Hanoi{
    def move(n:Int, fromTower:String, toTower:String, usingTower:String):Unit = {
        if (n==0) return
        move(n-1, fromTower, usingTower, toTower);
        println("Moving from " + fromTower + " to " + toTower)
        move(n-1, usingTower, toTower, fromTower);
    }
}