failing twelvemonkeys cmyk image load

cmyk.scala

import java.awt.color.ColorSpace
import java.io.File
import javax.imageio.stream.FileImageInputStream
import javax.imageio.{ImageIO, ImageReadParam, ImageTypeSpecifier}

import scala.collection.JavaConverters._

val file = new File("cmyk.jpg")
val iis = new FileImageInputStream(file)
val jpegReaders = ImageIO.getImageReaders(iis).asScala.toVector
val reader = jpegReaders.find { reader =>
  reader.getClass.getName == "com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageReader"
}.get

val cmykImage = {
  reader.setInput(new FileImageInputStream(file))
  val types = reader.getImageTypes(0)
  val cmykType = types.asScala
    .find(_.getColorModel.getColorSpace.getType == ColorSpace.TYPE_CMYK).get
  val param = reader.getDefaultReadParam
  param.setDestinationType(cmykType)
  reader.read(0, param)
}

val rgbImage = {
  reader.setInput(new FileImageInputStream(file))
  val types = reader.getImageTypes(0)
  val rgbType = types.asScala
    .find(_.getColorModel.getColorSpace.getType == ColorSpace.TYPE_RGB).get
  val param: ImageReadParam = reader.getDefaultReadParam
  param.setDestinationType(rgbType)
  reader.read(0, param)
}

assert(cmykImage.getRGB(4, 4) == rgbImage.getRGB(4, 4))