Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismView.cs
===================================================================
diff -u -r1bd841626a54c4e0204647a67323e4c2659af274 -rf25ad66ab15127c0d12410945f2cca66c0e77fc3
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismView.cs	(.../PipingFailureMechanismView.cs)	(revision 1bd841626a54c4e0204647a67323e4c2659af274)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismView.cs	(.../PipingFailureMechanismView.cs)	(revision f25ad66ab15127c0d12410945f2cca66c0e77fc3)
@@ -68,7 +68,6 @@
         private RecursiveObserver<IObservableEnumerable<HydraulicBoundaryLocationCalculation>, HydraulicBoundaryLocationCalculation> waveHeightCalculationsForSignalingNormObserver;
         private RecursiveObserver<IObservableEnumerable<HydraulicBoundaryLocationCalculation>, HydraulicBoundaryLocationCalculation> waveHeightCalculationsForLowerLimitNormObserver;
         private RecursiveObserver<IObservableEnumerable<HydraulicBoundaryLocationCalculation>, HydraulicBoundaryLocationCalculation> waveHeightCalculationsForFactorizedLowerLimitNormObserver;
-        private RecursiveObserver<ObservableList<HydraulicBoundaryLocation>, HydraulicBoundaryLocation> hydraulicBoundaryLocationObserver;
         private RecursiveObserver<CalculationGroup, PipingInput> calculationInputObserver;
         private RecursiveObserver<CalculationGroup, CalculationGroup> calculationGroupObserver;
         private RecursiveObserver<CalculationGroup, PipingCalculationScenario> calculationObserver;
@@ -157,7 +156,6 @@
             waveHeightCalculationsForLowerLimitNormObserver.Dispose();
             waveHeightCalculationsForFactorizedLowerLimitNormObserver.Dispose();
             hydraulicBoundaryLocationsObserver.Dispose();
-            hydraulicBoundaryLocationObserver.Dispose();
             stochasticSoilModelsObserver.Dispose();
             calculationInputObserver.Dispose();
             calculationGroupObserver.Dispose();
@@ -213,11 +211,6 @@
             waveHeightCalculationsForFactorizedLowerLimitNormObserver = ObserverHelper.CreateHydraulicBoundaryLocationCalculationsObserver(
                 AssessmentSection.WaveHeightCalculationsForFactorizedLowerLimitNorm, UpdateHydraulicBoundaryLocationsMapData);
 
-            hydraulicBoundaryLocationObserver = new RecursiveObserver<ObservableList<HydraulicBoundaryLocation>, HydraulicBoundaryLocation>(
-                UpdateHydraulicBoundaryLocationsMapData, hbl => hbl)
-            {
-                Observable = AssessmentSection.HydraulicBoundaryDatabase.Locations
-            };
             calculationInputObserver = new RecursiveObserver<CalculationGroup, PipingInput>(
                 UpdateCalculationsMapData, pcg => pcg.Children.Concat<object>(pcg.Children.OfType<PipingCalculationScenario>().Select(pc => pc.InputParameters)))
             {