Index: DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs
===================================================================
diff -u -r5663 -r5665
--- DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs	(.../MacroStabilityInwardsTests.cs)	(revision 5663)
+++ DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs	(.../MacroStabilityInwardsTests.cs)	(revision 5665)
@@ -979,7 +979,7 @@
                 Assert.That(output.Results.CalculationResults[0].StabilityDesignResults.SafetyFactor, Is.GreaterThanOrEqualTo(requiredSafetyFactor));
             } else if (!errorMessage.Equals(""))
             {
-                Assert.That(output.Results.CalculationMessages.Last().Message1.Contains(errorMessage), Is.True);
+                Assert.That(output.Results.CalculationMessages.Last().Message1, Does.Contain(errorMessage));
             }
             Assert.That(output.Results.CalculationResults[0].StabilityDesignResults.SafetyFactor, Is.EqualTo(actualSafetyFactor).Within(tolerance));
             Assert.That(output.Results.CalculationResults[0].StabilityDesignResults.NumberOfIterations, Is.EqualTo(iterationCount));