Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Views/IllustrationPointsChartControl.cs
===================================================================
diff -u -r82b9bf17e8089ff78acbe00e6b0a29971355095d -re74abe0ad35b23cf2350ee7bb786458c3ea53300
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Views/IllustrationPointsChartControl.cs	(.../IllustrationPointsChartControl.cs)	(revision 82b9bf17e8089ff78acbe00e6b0a29971355095d)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Views/IllustrationPointsChartControl.cs	(.../IllustrationPointsChartControl.cs)	(revision e74abe0ad35b23cf2350ee7bb786458c3ea53300)
@@ -19,9 +19,6 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Windows.Forms;
 using Core.Components.Stack.Data;
 using Ringtoets.Common.Data.Hydraulics.IllustrationPoints;
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Views/IllustrationPointsControl.cs
===================================================================
diff -u -ra09a8d55dd24812784b22dd4a0f64e605ebc390a -re74abe0ad35b23cf2350ee7bb786458c3ea53300
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Views/IllustrationPointsControl.cs	(.../IllustrationPointsControl.cs)	(revision a09a8d55dd24812784b22dd4a0f64e605ebc390a)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Views/IllustrationPointsControl.cs	(.../IllustrationPointsControl.cs)	(revision e74abe0ad35b23cf2350ee7bb786458c3ea53300)
@@ -50,6 +50,12 @@
             }
             set
             {
+                if (data != null && data.Equals(value)
+                    || data == null && value == null)
+                {
+                    return;
+                }
+
                 data = value;
                 illustrationPointsChartControl.Data = data;
             }