Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Service.Test/WaveImpactAsphaltCoverWaveConditionsCalculationActivityTest.cs
===================================================================
diff -u -r02670d8c9fceeaea5f829937a2eb269f3488c6b1 -ra8c48040ef69edbc103390432fbd921244e92afd
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Service.Test/WaveImpactAsphaltCoverWaveConditionsCalculationActivityTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationActivityTest.cs)	(revision 02670d8c9fceeaea5f829937a2eb269f3488c6b1)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Service.Test/WaveImpactAsphaltCoverWaveConditionsCalculationActivityTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationActivityTest.cs)	(revision a8c48040ef69edbc103390432fbd921244e92afd)
@@ -24,6 +24,7 @@
 using NUnit.Framework;
 using Rhino.Mocks;
 using Ringtoets.Common.Data.AssessmentSection;
+using Ringtoets.HydraRing.Calculation.Activities;
 using Ringtoets.WaveImpactAsphaltCover.Data;
 
 namespace Ringtoets.WaveImpactAsphaltCover.Service.Test
@@ -46,6 +47,7 @@
             var activity = new WaveImpactAsphaltCoverWaveConditionsCalculationActivity(calculation, string.Empty, failureMechanism, assessmentSectionMock);
 
             // Assert
+            Assert.IsInstanceOf<HydraRingActivityBase>(activity);
             Assert.IsNull(activity.ProgressText);
             Assert.AreEqual(ActivityState.None, activity.State);
             Assert.AreEqual(calculation.Name, activity.Name);