Frustrating case class issue

apart.scala

scala> case class Foo private(x: Int)
defined class Foo

scala> Foo(5)
res5: Foo = Foo(5)

together.scala

scala> :paste
// Entering paste mode (ctrl-D to finish)

case class Foo private(x: Int)
Foo.apply(5)

// Exiting paste mode, now interpreting.

<console>:10: error: constructor Foo in class Foo cannot be accessed in object $iw
              Foo.apply(5)
                  ^