Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/DesignWaterLevelLocationsView.cs
===================================================================
diff -u -r1042a38d3663daeda5a8e1083edbc63a4b6aae94 -r5964d4196c1f7f02df79e98ef4f876a338abef62
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/DesignWaterLevelLocationsView.cs	(.../DesignWaterLevelLocationsView.cs)	(revision 1042a38d3663daeda5a8e1083edbc63a4b6aae94)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/DesignWaterLevelLocationsView.cs	(.../DesignWaterLevelLocationsView.cs)	(revision 5964d4196c1f7f02df79e98ef4f876a338abef62)
@@ -57,10 +57,14 @@
             {
                 return;
             }
-            CalculationGuiService.CalculateDesignWaterLevels(AssessmentSection.HydraulicBoundaryDatabase.FilePath,
-                locations,
-                AssessmentSection.Id,
-                AssessmentSection.FailureMechanismContribution.Norm, new DesignWaterLevelCalculationMessageProvider());
+            bool successfulCalculation = CalculationGuiService.CalculateDesignWaterLevels(AssessmentSection.HydraulicBoundaryDatabase.FilePath,
+                                                                                          locations,
+                                                                                          AssessmentSection.Id,
+                                                                                          AssessmentSection.FailureMechanismContribution.Norm, new DesignWaterLevelCalculationMessageProvider());
+            if (successfulCalculation)
+            {
+               AssessmentSection.HydraulicBoundaryDatabase.NotifyObservers();
+            }
         }
 
         protected override void InitializeDataGridView()