Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs
===================================================================
diff -u -r255ffcdbfd4ffff68c336ad9922e6196636c2803 -r4936ea40e490dd8a3ed500e1c5a8f8390ff31491
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs	(.../HeightStructuresFailureMechanismTest.cs)	(revision 255ffcdbfd4ffff68c336ad9922e6196636c2803)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs	(.../HeightStructuresFailureMechanismTest.cs)	(revision 4936ea40e490dd8a3ed500e1c5a8f8390ff31491)
@@ -41,11 +41,12 @@
             Assert.IsInstanceOf<FailureMechanismBase>(failureMechanism);
             Assert.AreEqual("Kunstwerken - Hoogte kunstwerk", failureMechanism.Name);
             Assert.AreEqual("HTKW", failureMechanism.Code);
+            Assert.AreEqual("Berekeningen", failureMechanism.CalculationsGroup.Name);
             CollectionAssert.IsEmpty(failureMechanism.Sections);
             CollectionAssert.IsEmpty(failureMechanism.Calculations);
-            Assert.AreEqual("Berekeningen", failureMechanism.CalculationsGroup.Name);
-            Assert.IsEmpty(failureMechanism.CalculationsGroup.Children);
-            Assert.IsInstanceOf<GeneralNormProbabilityInput>(failureMechanism.NormProbabilityInput);
+            Assert.IsNotNull(failureMechanism.CalculationsGroup);
+            CollectionAssert.IsEmpty(failureMechanism.CalculationsGroup.Children);
+            Assert.IsNotNull(failureMechanism.NormProbabilityInput);
         }
 
         [Test]