Index: DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/OperationalGrebbedijkTests.cs
===================================================================
diff -u -r4624 -r4627
--- DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/OperationalGrebbedijkTests.cs	(.../OperationalGrebbedijkTests.cs)	(revision 4624)
+++ DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/OperationalGrebbedijkTests.cs	(.../OperationalGrebbedijkTests.cs)	(revision 4627)
@@ -100,7 +100,7 @@
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
         var engineInterface = new EngineInterface(inputString);
-        Assert.IsNotNull(engineInterface.DamProjectData);
+        Assert.That(engineInterface.DamProjectData, Is.Not.Null);
         engineInterface.DamProjectData.DamProjectCalculationSpecification.CurrentSpecification.FailureMechanismSystemType = FailureMechanismSystemType.Piping;
         engineInterface.DamProjectData.DamProjectCalculationSpecification.CurrentSpecification.PipingModelType = pipingModel;