JFreeChart não mostra os valores na legenda

DefaultPieDataset dataset = new DefaultPieDataset();

	dataset.setValue("Com Governo", new Double(votosComGoverno));
	dataset.setValue( "Divergentes", new Double(votoDivergentes));
	
	JFreeChart chart = ChartFactory.createPieChart3D("Expediente" , dataset, true, true, false);
		
    final PiePlot3D plot = (PiePlot3D) chart.getPlot();
    plot.setStartAngle(290);
    plot.setDirection(Rotation.CLOCKWISE);
    plot.setForegroundAlpha(0.5f);
    plot.setNoDataMessage("No data to display");
    plot.setIgnoreZeroValues(true);

 BufferedImage chartImage = chart.createBufferedImage(350, 200, info);