Index: Core/Components/src/Core.Components.OxyPlot/Data/AreaData.cs
===================================================================
diff -u -r4ea1323ca52ee52133113dbc01bae0429946d0d4 -r464f4654c9b96c285408cda0a7b3adbc8962b3ae
--- Core/Components/src/Core.Components.OxyPlot/Data/AreaData.cs	(.../AreaData.cs)	(revision 4ea1323ca52ee52133113dbc01bae0429946d0d4)
+++ Core/Components/src/Core.Components.OxyPlot/Data/AreaData.cs	(.../AreaData.cs)	(revision 464f4654c9b96c285408cda0a7b3adbc8962b3ae)
@@ -33,7 +33,7 @@
             {
                 series.Points.Add(Mapping(p));
             }
-            //series.Points2.Add(Mapping(points.First()));
+            series.Points2.Add(Mapping(points.First()));
         }
 
         private DataPoint Mapping(Tuple<double, double> point)
Index: Core/Components/test/Core.Components.OxyPlot.Test/Data/AreaDataTest.cs
===================================================================
diff -u -r4ea1323ca52ee52133113dbc01bae0429946d0d4 -r464f4654c9b96c285408cda0a7b3adbc8962b3ae
--- Core/Components/test/Core.Components.OxyPlot.Test/Data/AreaDataTest.cs	(.../AreaDataTest.cs)	(revision 4ea1323ca52ee52133113dbc01bae0429946d0d4)
+++ Core/Components/test/Core.Components.OxyPlot.Test/Data/AreaDataTest.cs	(.../AreaDataTest.cs)	(revision 464f4654c9b96c285408cda0a7b3adbc8962b3ae)
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using Core.Components.OxyPlot.Data;
@@ -77,7 +78,9 @@
             Assert.IsInstanceOf<AreaSeries>(model.Series.First());
 
             var series = (AreaSeries)model.Series.First();
-            Assert.AreSame(points, series.ItemsSource);
+            var equivalentPoints = points.Select(p => new DataPoint(p.Item1, p.Item2)).ToArray();
+            CollectionAssert.AreEquivalent(equivalentPoints, series.Points);
+            CollectionAssert.AreEquivalent(Arrays.CopyOf(equivalentPoints,1), series.Points2);
         }
 
         private Collection<Tuple<double, double>> CreateTestPoints()