Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverFailureMechanismContextTreeNodeInfoTest.cs
===================================================================
diff -u -r999a9c70c1fd234bf757f26580682296ecc6b4cd -rfa1dc23daebf3b0d1e04f701262370420f8314f7
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverFailureMechanismContextTreeNodeInfoTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismContextTreeNodeInfoTest.cs)	(revision 999a9c70c1fd234bf757f26580682296ecc6b4cd)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverFailureMechanismContextTreeNodeInfoTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismContextTreeNodeInfoTest.cs)	(revision fa1dc23daebf3b0d1e04f701262370420f8314f7)
@@ -527,8 +527,11 @@
             WaveImpactAsphaltCoverWaveConditionsCalculation calculationA = GetValidCalculation(hydraulicBoundaryLocation);
             WaveImpactAsphaltCoverWaveConditionsCalculation calculationB = GetValidCalculation(hydraulicBoundaryLocation);
             List<ICalculationBase> calculations = failureMechanism.WaveConditionsCalculationGroup.Children;
-            calculations.Add(calculationA);
-            calculations.Add(calculationB);
+            calculations.AddRange(new[]
+            {
+                calculationA,
+                calculationB
+            });
 
             var nodeData = new WaveImpactAsphaltCoverFailureMechanismContext(failureMechanism,
                                                                              assessmentSection);