Index: Ringtoets/Common/test/Ringtoets.Common.Service.Test/DesignWaterLevelCalculationActivityTest.cs
===================================================================
diff -u -rec03b23520b9fbc7e2f79f2a5589bb832b510fda -r6c058f12138b8a73a78eacd10357d9caa81ed67d
--- Ringtoets/Common/test/Ringtoets.Common.Service.Test/DesignWaterLevelCalculationActivityTest.cs	(.../DesignWaterLevelCalculationActivityTest.cs)	(revision ec03b23520b9fbc7e2f79f2a5589bb832b510fda)
+++ Ringtoets/Common/test/Ringtoets.Common.Service.Test/DesignWaterLevelCalculationActivityTest.cs	(.../DesignWaterLevelCalculationActivityTest.cs)	(revision 6c058f12138b8a73a78eacd10357d9caa81ed67d)
@@ -338,7 +338,6 @@
             calculationMessageProvider.Stub(calc => calc.GetActivityDescription(locationName)).Return(string.Empty);
             calculationMessageProvider.Stub(calc => calc.GetCalculationName(locationName)).Return(string.Empty);
             calculationMessageProvider.Stub(calc => calc.GetCalculationFailedMessage(null, null)).IgnoreArguments().Return(detailedReport);
-            calculationMessageProvider.Stub(calc => calc.GetCalculationFailedUnexplainedMessage(null)).IgnoreArguments().Return(detailedReport);
             mockRepository.ReplayAll();
 
             var output = new TestHydraulicBoundaryLocationOutput(double.NaN, CalculationConvergence.CalculatedConverged);
@@ -454,8 +453,10 @@
             var calculationMessageProvider = mockRepository.StrictMock<ICalculationMessageProvider>();
             calculationMessageProvider.Stub(calc => calc.GetActivityDescription(locationName)).Return(string.Empty);
             calculationMessageProvider.Stub(calc => calc.GetCalculationName(locationName)).Return(string.Empty);
-            calculationMessageProvider.Stub(calc => calc.GetCalculationFailedMessage(null, null)).IgnoreArguments().Return(string.Empty);
-            calculationMessageProvider.Stub(calc => calc.GetCalculationFailedUnexplainedMessage(locationName)).Return(string.Empty);
+            calculationMessageProvider.Stub(calc => calc.GetCalculationFailedMessage(locationName,
+                                                                                     string.IsNullOrEmpty(lastErrorFileContent)
+                                                                                         ? calculator.HydraRingCalculationException.Message
+                                                                                         : lastErrorFileContent)).Return(string.Empty);
             calculationMessageProvider.Stub(calc => calc.GetCalculatedNotConvergedMessage(locationName)).Return(string.Empty);
             mockRepository.ReplayAll();