diff --git a/README.md b/README.md
index 173fd06..b7a8fc9 100644
--- a/README.md
+++ b/README.md
@@ -200,13 +200,13 @@ import (
 )
 
 sales := dataframe.NewSeriesFloat64("sales", nil, 50.3, nil, 23.4, 56.2, 89, 32, 84.2, 72, 89)
-cs, _ := c.S(ctx, sales, nil)
+cs, _ := c.S(ctx, sales, nil, nil)
 
 graph := chart.Chart{Series: []chart.Series{cs}}
 
 plt, _ := plot.Open("Monthly sales", 450, 300)
 graph.Render(chart.SVG, plt)
-plt.Display(plot.SVG)
+plt.Display()
 <-plt.Closed
 
 ```