Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationService.cs
===================================================================
diff -u -r3b6dd3cc6948e3870c372c7299bda5fbd5d969a3 -ra733a4597527cbad99a54ddd8664e9ed957e844f
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationService.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationService.cs)	(revision 3b6dd3cc6948e3870c372c7299bda5fbd5d969a3)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationService.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationService.cs)	(revision a733a4597527cbad99a54ddd8664e9ed957e844f)
@@ -115,7 +115,12 @@
             RoundedDouble a = failureMechanism.GeneralInput.GeneralWaveConditionsInput.A;
             RoundedDouble b = failureMechanism.GeneralInput.GeneralWaveConditionsInput.B;
             RoundedDouble c = failureMechanism.GeneralInput.GeneralWaveConditionsInput.C;
-            double mechanismSpecificNorm = failureMechanism.GetMechanismSpecificNorm(assessmentSection);
+
+            double mechanismSpecificNorm = RingtoetsCommonDataCalculationService.ProfileSpecificRequiredProbability(
+                assessmentSection.FailureMechanismContribution.Norm,
+                failureMechanism.Contribution,
+                failureMechanism.GeneralInput.N);
+
             TotalWaterLevelCalculations = calculation.InputParameters.WaterLevels.Count();
 
             try