Index: Ringtoets/Common/test/Ringtoets.Common.Forms.TestUtil/LocationsViewSynchronizationTester.cs
===================================================================
diff -u -r10e6f9291398660f562b21320da82ba6b557bdf2 -r61ec7f61542fbcb75392332755c5770ecea8d3a5
--- Ringtoets/Common/test/Ringtoets.Common.Forms.TestUtil/LocationsViewSynchronizationTester.cs	(.../LocationsViewSynchronizationTester.cs)	(revision 10e6f9291398660f562b21320da82ba6b557bdf2)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.TestUtil/LocationsViewSynchronizationTester.cs	(.../LocationsViewSynchronizationTester.cs)	(revision 61ec7f61542fbcb75392332755c5770ecea8d3a5)
@@ -105,6 +105,7 @@
 
             locations.ForEach(loc =>
             {
+                loc.DesignWaterLevelCalculation.Output = null;
                 loc.WaveHeightCalculation.Output = null;
                 loc.NotifyObservers();
             });
@@ -115,6 +116,7 @@
             ObservableList<HydraulicBoundaryLocation> locations = GetLocationsInView(view);
 
             HydraulicBoundaryLocation hydraulicBoundaryLocation = locations.First();
+            hydraulicBoundaryLocation.DesignWaterLevelCalculation.Output = new TestHydraulicBoundaryLocationOutput(new TestGeneralResultSubMechanismIllustrationPoint());
             hydraulicBoundaryLocation.WaveHeightCalculation.Output = new TestHydraulicBoundaryLocationOutput(new TestGeneralResultSubMechanismIllustrationPoint());
             hydraulicBoundaryLocation.NotifyObservers();
         }