Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Service.Test/GrassCoverErosionInwardsCalculationActivityTest.cs
===================================================================
diff -u -r76948e8765899b35776102ecd211d3d7575a9e4d -r57cf41dc262bf62fdf1dddc550884a2f79163d4e
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Service.Test/GrassCoverErosionInwardsCalculationActivityTest.cs	(.../GrassCoverErosionInwardsCalculationActivityTest.cs)	(revision 76948e8765899b35776102ecd211d3d7575a9e4d)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Service.Test/GrassCoverErosionInwardsCalculationActivityTest.cs	(.../GrassCoverErosionInwardsCalculationActivityTest.cs)	(revision 57cf41dc262bf62fdf1dddc550884a2f79163d4e)
@@ -47,7 +47,7 @@
             var activity = new GrassCoverErosionInwardsCalculationActivity(calculation, "", failureMechanism, assessmentSection);
 
             // Assert
-            Assert.IsInstanceOf<HydraRingActivityBase>(activity);
+            Assert.IsInstanceOf<CalculatableActivity>(activity);
             Assert.AreEqual($"Uitvoeren van berekening '{calculation.Name}'", activity.Description);
             Assert.IsNull(activity.ProgressText);
             Assert.AreEqual(ActivityState.None, activity.State);