Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Calculator/OvertoppingCalculator.cs
===================================================================
diff -u -r64d60335b1deab4bafd37f78f3514660cc4afb27 -r351f14cf0c38b7ee62d5bad23dcce21ac9ea2f55
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Calculator/OvertoppingCalculator.cs	(.../OvertoppingCalculator.cs)	(revision 64d60335b1deab4bafd37f78f3514660cc4afb27)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Calculator/OvertoppingCalculator.cs	(.../OvertoppingCalculator.cs)	(revision 351f14cf0c38b7ee62d5bad23dcce21ac9ea2f55)
@@ -19,7 +19,6 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System;
 using System.Collections.Generic;
 using Ringtoets.HydraRing.Calculation.Data;
 using Ringtoets.HydraRing.Calculation.Data.Input.Overtopping;
@@ -58,6 +57,8 @@
 
         public bool IsOvertoppingDominant { get; private set; }
 
+        public new string IllustrationPointsParserErrorMessage { get; set; }
+
         public void Calculate(OvertoppingCalculationInput input)
         {
             Calculate(HydraRingUncertaintiesType.All, input);