Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PropertyClasses/HeightStructuresFailureMechanismContextPropertiesTest.cs
===================================================================
diff -u -r7fc49c4805ff8aad4dc1724ce5b1411ee10a47e0 -r780026d643daa908175ea55cf553a33ae1d8f634
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PropertyClasses/HeightStructuresFailureMechanismContextPropertiesTest.cs	(.../HeightStructuresFailureMechanismContextPropertiesTest.cs)	(revision 7fc49c4805ff8aad4dc1724ce5b1411ee10a47e0)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PropertyClasses/HeightStructuresFailureMechanismContextPropertiesTest.cs	(.../HeightStructuresFailureMechanismContextPropertiesTest.cs)	(revision 780026d643daa908175ea55cf553a33ae1d8f634)
@@ -159,15 +159,15 @@
 
             PropertyDescriptor modelfactorOvertoppingFlowProperty = dynamicProperties[modelfactorOvertoppingFlowPropertyIndex];
             Assert.IsNotNull(modelfactorOvertoppingFlowProperty);
-            Assert.IsTrue(modelfactorOvertoppingFlowProperty.Converter is ExpandableObjectConverter);
+            Assert.IsInstanceOf<ExpandableObjectConverter>(modelfactorOvertoppingFlowProperty.Converter);
             Assert.IsTrue(modelfactorOvertoppingFlowProperty.IsReadOnly);
             Assert.AreEqual("Modelfactoren", modelfactorOvertoppingFlowProperty.Category);
             Assert.AreEqual("Modelfactor overslagdebiet [-]", modelfactorOvertoppingFlowProperty.DisplayName);
             Assert.AreEqual("Het modelfactor overslagdebiet.", modelfactorOvertoppingFlowProperty.Description);
 
             PropertyDescriptor modelFactorForStorageVolumeProperty = dynamicProperties[modelFactorForStorageVolumePropertyIndex];
             Assert.IsNotNull(modelFactorForStorageVolumeProperty);
-            Assert.IsTrue(modelFactorForStorageVolumeProperty.Converter is ExpandableObjectConverter);
+            Assert.IsInstanceOf<ExpandableObjectConverter>(modelFactorForStorageVolumeProperty.Converter);
             Assert.IsTrue(modelFactorForStorageVolumeProperty.IsReadOnly);
             Assert.AreEqual("Modelfactoren", modelFactorForStorageVolumeProperty.Category);
             Assert.AreEqual("Modelfactor kombergingsvolume [-]", modelFactorForStorageVolumeProperty.DisplayName);