Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs
===================================================================
diff -u -r756f077b356b86d6524dac7234ed6003b51a6d68 -r267be1d4fd22c83ba0ed078df17922adab0658ac
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs	(.../PipingFailureMechanismTest.cs)	(revision 756f077b356b86d6524dac7234ed6003b51a6d68)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs	(.../PipingFailureMechanismTest.cs)	(revision 267be1d4fd22c83ba0ed078df17922adab0658ac)
@@ -36,8 +36,7 @@
             CollectionAssert.IsEmpty(piping.StochasticSoilModels);
             Assert.IsInstanceOf<ObservableList<StochasticSoilModel>>(piping.StochasticSoilModels);
             Assert.AreEqual("Berekeningen", piping.CalculationsGroup.Name);
-            Assert.AreEqual(1, piping.CalculationsGroup.Children.Count);
-            Assert.IsInstanceOf<PipingCalculation>(piping.CalculationsGroup.Children.First());
+            Assert.IsEmpty(piping.CalculationsGroup.Children);
         }
 
         [Test]