Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultViews/GrassCoverSlipOffOutwardsResultView.cs
===================================================================
diff -u -r50b3a6c556aace513b84909963bbc0ad37ee4374 -rb0dc46315e824778c8f43d8956f958376a3b802f
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultViews/GrassCoverSlipOffOutwardsResultView.cs	(.../GrassCoverSlipOffOutwardsResultView.cs)	(revision 50b3a6c556aace513b84909963bbc0ad37ee4374)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultViews/GrassCoverSlipOffOutwardsResultView.cs	(.../GrassCoverSlipOffOutwardsResultView.cs)	(revision b0dc46315e824778c8f43d8956f958376a3b802f)
@@ -54,13 +54,7 @@
         public GrassCoverSlipOffOutwardsResultView(
             IObservableEnumerable<GrassCoverSlipOffOutwardsFailureMechanismSectionResult> failureMechanismSectionResults,
             GrassCoverSlipOffOutwardsFailureMechanism failureMechanism)
-            : base(failureMechanismSectionResults, failureMechanism)
-        {
-            var assemblyResultControl = new FailureMechanismAssemblyCategoryGroupControl();
-            SetAssemblyResultControl(
-                assemblyResultControl,
-                () => assemblyResultControl.SetAssemblyResult(GrassCoverSlipOffOutwardsFailureMechanismAssemblyFactory.AssembleFailureMechanism(FailureMechanism)));
-        }
+            : base(failureMechanismSectionResults, failureMechanism) {}
 
         protected override GrassCoverSlipOffOutwardsSectionResultRow CreateFailureMechanismSectionResultRow(GrassCoverSlipOffOutwardsFailureMechanismSectionResult sectionResult)
         {
@@ -121,5 +115,10 @@
                 DataGridViewControl,
                 nameof(GrassCoverSlipOffOutwardsSectionResultRow.ManualAssemblyCategoryGroup));
         }
+
+        protected override void UpdateAssemblyResultControl()
+        {
+            FailureMechanismAssemblyResultControl.SetAssemblyResult(GrassCoverSlipOffOutwardsFailureMechanismAssemblyFactory.AssembleFailureMechanism(FailureMechanism));
+        }
     }
 }
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