Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs
===================================================================
diff -u -rb4e3629ea2130359117dd403af8db3c8ae0c680b -r038eb94cddc025675fb784caca7acd7f4ec39b89
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs)	(revision b4e3629ea2130359117dd403af8db3c8ae0c680b)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs)	(revision 038eb94cddc025675fb784caca7acd7f4ec39b89)
@@ -22,7 +22,6 @@
 using System.Linq;
 using Core.Common.Base;
 using NUnit.Framework;
-using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Revetment.Data;
 using RingtoetsCommonDataResources = Ringtoets.Common.Data.Properties.Resources;
 
@@ -38,7 +37,7 @@
             var calculation = new GrassCoverErosionOutwardsWaveConditionsCalculation();
 
             // Assert
-            Assert.IsInstanceOf<ICalculation>(calculation);
+            Assert.IsInstanceOf<IWaveConditionsCalculation>(calculation);
             Assert.IsInstanceOf<Observable>(calculation);
 
             Assert.AreEqual(RingtoetsCommonDataResources.Calculation_DefaultName, calculation.Name);