diff --git a/curvedLines.js b/curvedLines.js
index f672d73..67453c8 100644
--- a/curvedLines.js
+++ b/curvedLines.js
@@ -159,6 +159,9 @@ _____________________________________________________
 		newSerie.lines=$.extend({},series.lines);
 		newSerie.lines.fill=undefined;
 		newSerie.label=undefined;
+		newSerie.datapoints={};//Redefine datapoints to top only (else it can have null values which will open the cruve !)
+		newSerie.datapoints.points=pointsTop; 
+		newSerie.datapoints.pointsize=2;
 		newSerie.lines.curved=false; //Don't redo curve point calculation as datapoint is copied to this new serie
 		//We find our series to add the line just after the fill (so other series you wanted above this one will still be)
 		var allSeries=plot.getData();