Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverWaveConditionsCalculationService.cs
===================================================================
diff -u -re2892835ceb1c916be9a9122ba372858f20b981a -r80de235bcb060dec1747e166ac28c1c8db92a20a
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverWaveConditionsCalculationService.cs	(.../StabilityStoneCoverWaveConditionsCalculationService.cs)	(revision e2892835ceb1c916be9a9122ba372858f20b981a)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverWaveConditionsCalculationService.cs	(.../StabilityStoneCoverWaveConditionsCalculationService.cs)	(revision 80de235bcb060dec1747e166ac28c1c8db92a20a)
@@ -121,7 +121,7 @@
 
             double norm = assessmentSection.FailureMechanismContribution.Norm;
             string preprocessorDirectory = assessmentSection.HydraulicBoundaryDatabase.EffectivePreprocessorDirectory();
-            TotalWaterLevelCalculations = calculation.InputParameters.WaterLevels.Count() * 2;
+            TotalWaterLevelCalculations = calculation.InputParameters.GetWaterLevels(calculation.InputParameters.AssessmentLevel).Count() * 2;
 
             try
             {