Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/FailureMechanismContributionView.cs
===================================================================
diff -u -r684b8c0ca681ea2da3cc988bd60e9223037e5a16 -r8c60e937f4b8009fea80f3702879e100fe03b63f
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/FailureMechanismContributionView.cs	(.../FailureMechanismContributionView.cs)	(revision 684b8c0ca681ea2da3cc988bd60e9223037e5a16)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/FailureMechanismContributionView.cs	(.../FailureMechanismContributionView.cs)	(revision 8c60e937f4b8009fea80f3702879e100fe03b63f)
@@ -28,6 +28,7 @@
 using Core.Common.Utils.Reflection;
 
 using Ringtoets.Common.Data.AssessmentSection;
+using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.Contribution;
 using Ringtoets.Common.Data.FailureMechanism;
 
@@ -353,7 +354,7 @@
                 IFailureMechanism failureMechanism = allFailureMechanisms[i];
                 if (originalFailureMechanismContributions[i] != failureMechanism.Contribution)
                 {
-                    foreach (ICalculationItem calculation in failureMechanism.CalculationItems)
+                    foreach (ICalculation calculation in failureMechanism.Calculations)
                     {
                         calculation.ClearOutput();
                         calculation.NotifyObservers();