Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs
===================================================================
diff -u -rc3641f1375abfabf1c8093037c0cccd3eb77d52a -r2c9c53c801c51c2a6c5692c937cad7cd8a3879f3
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs	(.../GrassCoverErosionInwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs	(.../GrassCoverErosionInwardsFailureMechanism.cs)	(revision 2c9c53c801c51c2a6c5692c937cad7cd8a3879f3)
@@ -35,8 +35,6 @@
     /// </summary>
     public class GrassCoverErosionInwardsFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<GrassCoverErosionInwardsFailureMechanismSectionResult>
     {
-        private readonly ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult> sectionResults;
-
         /// <summary>
         /// Initializes a new instance of the <see cref="GrassCoverErosionInwardsFailureMechanism"/> class.
         /// </summary>
@@ -48,7 +46,7 @@
                 Name = RingtoetsCommonDataResources.FailureMechanism_Calculations_DisplayName
             };
             GeneralInput = new GeneralGrassCoverErosionInwardsInput();
-            sectionResults = new ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult>();
+            SectionResults = new ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult>();
             DikeProfiles = new DikeProfileCollection();
         }
 
@@ -72,25 +70,21 @@
 
         public CalculationGroup CalculationsGroup { get; }
 
-        public ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult> SectionResults
-        {
-            get
-            {
-                return sectionResults;
-            }
-        }
+        public ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult> SectionResults { get; }
 
         public override void AddSection(FailureMechanismSection section)
         {
             base.AddSection(section);
 
-            sectionResults.Add(new GrassCoverErosionInwardsFailureMechanismSectionResult(section));
+            SectionResults.Add(new GrassCoverErosionInwardsFailureMechanismSectionResult(section));
+            SectionResults.NotifyObservers();
         }
 
         public override void ClearAllSections()
         {
             base.ClearAllSections();
-            sectionResults.Clear();
+            SectionResults.Clear();
+            SectionResults.NotifyObservers();
         }
     }
 }
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