Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismResultView.cs
===================================================================
diff -u -r5785cc13c0454eaabed7ede4dad8e885db7efd50 -rd6f110ecb32392f3ff1983a5e3e2b1f4603ae917
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismResultView.cs	(.../MacroStabilityInwardsFailureMechanismResultView.cs)	(revision 5785cc13c0454eaabed7ede4dad8e885db7efd50)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismResultView.cs	(.../MacroStabilityInwardsFailureMechanismResultView.cs)	(revision d6f110ecb32392f3ff1983a5e3e2b1f4603ae917)
@@ -45,7 +45,6 @@
         private readonly RecursiveObserver<CalculationGroup, ICalculationInput> calculationInputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationOutput> calculationOutputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationBase> calculationGroupObserver;
-        private readonly Observer failureMechanismObserver;
         private readonly IAssessmentSection assessmentSection;
 
         /// <inheritdoc />
@@ -64,11 +63,6 @@
                 throw new ArgumentNullException(nameof(assessmentSection));
             }
 
-            failureMechanismObserver = new Observer(UpdateDataGridViewDataSource)
-            {
-                Observable = failureMechanism
-            };
-
             this.assessmentSection = assessmentSection;
 
             // The concat is needed to observe the input of calculations in child groups.
@@ -101,7 +95,6 @@
             calculationInputObserver.Dispose();
             calculationOutputObserver.Dispose();
             calculationGroupObserver.Dispose();
-            failureMechanismObserver.Dispose();
 
             base.Dispose(disposing);
         }