Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismResultView.cs
===================================================================
diff -u -r94f68f51cd9b8fd8c0c162cf874ef7e4580b0ee4 -r133c9a406ae0fe1d3084fd3cef818070d95b666f
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismResultView.cs	(.../GrassCoverErosionInwardsFailureMechanismResultView.cs)	(revision 94f68f51cd9b8fd8c0c162cf874ef7e4580b0ee4)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismResultView.cs	(.../GrassCoverErosionInwardsFailureMechanismResultView.cs)	(revision 133c9a406ae0fe1d3084fd3cef818070d95b666f)
@@ -25,7 +25,6 @@
 using Core.Common.Base;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Calculation;
-using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Forms.Helpers;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.GrassCoverErosionInwards.Data;
@@ -48,10 +47,12 @@
         /// Creates a new instance of <see cref="GrassCoverErosionInwardsFailureMechanismResultView"/>.
         /// </summary>
         /// <param name="assessmentSection">The assessment section the failure mechanism section results belongs to.</param>
+        /// <param name="failureMechanism">The failure mechanism this view belongs to.</param>
         /// <param name="failureMechanismSectionResults">The collection failure mechanism section results.</param>
         /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
         public GrassCoverErosionInwardsFailureMechanismResultView(
             IAssessmentSection assessmentSection,
+            GrassCoverErosionInwardsFailureMechanism failureMechanism,
             IObservableEnumerable<GrassCoverErosionInwardsFailureMechanismSectionResult> failureMechanismSectionResults)
             : base(failureMechanismSectionResults)
         {
@@ -60,6 +61,13 @@
                 throw new ArgumentNullException(nameof(assessmentSection));
             }
 
+            if (failureMechanism == null)
+            {
+                throw new ArgumentNullException(nameof(failureMechanism));
+            }
+
+            FailureMechanism = failureMechanism;
+
             this.assessmentSection = assessmentSection;
 
             DataGridViewControl.CellFormatting += ShowAssessmentLayerErrors;
@@ -79,23 +87,20 @@
             calculationGroupObserver = new RecursiveObserver<CalculationGroup, ICalculationBase>(
                 UpdateDataGridViewDataSource,
                 c => c.Children);
-        }
 
-        public override IFailureMechanism FailureMechanism
-        {
-            set
-            {
-                base.FailureMechanism = value;
+            CalculationGroup observableGroup = failureMechanism.CalculationsGroup;
+            calculationInputObserver.Observable = observableGroup;
+            calculationOutputObserver.Observable = observableGroup;
+            calculationGroupObserver.Observable = observableGroup;
 
-                var calculatableFailureMechanism = value as ICalculatableFailureMechanism;
-                CalculationGroup observableGroup = calculatableFailureMechanism?.CalculationsGroup;
-
-                calculationInputObserver.Observable = observableGroup;
-                calculationOutputObserver.Observable = observableGroup;
-                calculationGroupObserver.Observable = observableGroup;
-            }
+            UpdateDataGridViewDataSource();
         }
 
+        /// <summary>
+        /// Gets the grass cover erosion inwards failure mechanism.
+        /// </summary>
+        public GrassCoverErosionInwardsFailureMechanism FailureMechanism { get; }
+
         protected override void Dispose(bool disposing)
         {
             DataGridViewControl.CellFormatting -= ShowAssessmentLayerErrors;
@@ -115,7 +120,7 @@
                 return null;
             }
 
-            return new GrassCoverErosionInwardsFailureMechanismSectionResultRow(sectionResult, (GrassCoverErosionInwardsFailureMechanism) FailureMechanism,
+            return new GrassCoverErosionInwardsFailureMechanismSectionResultRow(sectionResult, FailureMechanism,
                                                                                 assessmentSection);
         }