Index: DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Geotechnics/SigmaTauCurveTests.cs
===================================================================
diff -u -r4624 -r4627
--- DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Geotechnics/SigmaTauCurveTests.cs	(.../SigmaTauCurveTests.cs)	(revision 4624)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Geotechnics/SigmaTauCurveTests.cs	(.../SigmaTauCurveTests.cs)	(revision 4627)
@@ -38,8 +38,8 @@
         List<SigmaTauPoint> points = curve.Points;
 
         // Then
-        Assert.IsNotNull(points);
-        Assert.IsInstanceOf<List<SigmaTauPoint>>(points);
+        Assert.That(points, Is.Not.Null);
+        Assert.That(points, Is.InstanceOf<List<SigmaTauPoint>>());
         Assert.That(points.Count, Is.EqualTo(0));
     }