Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/KernelWrappers/MacroStabilityInwards/MacroStabilityInwardsKernelWrapperTests.cs
===================================================================
diff -u -r3307 -r3323
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/KernelWrappers/MacroStabilityInwards/MacroStabilityInwardsKernelWrapperTests.cs	(.../MacroStabilityInwardsKernelWrapperTests.cs)	(revision 3307)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/KernelWrappers/MacroStabilityInwards/MacroStabilityInwardsKernelWrapperTests.cs	(.../MacroStabilityInwardsKernelWrapperTests.cs)	(revision 3323)
@@ -29,6 +29,7 @@
 using Deltares.DamEngine.Data.Design;
 using Deltares.DamEngine.Data.General;
 using Deltares.DamEngine.Data.General.Results;
+using Deltares.DamEngine.Data.Geotechnics;
 using Deltares.DamEngine.Data.Standard.Calculation;
 using Deltares.DamEngine.Interface;
 using Deltares.DamEngine.Io;
@@ -333,16 +334,18 @@
             location.SurfaceLine.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.DitchPolderSide).X = 62.5;
             location.SurfaceLine.Geometry.SyncCalcPoints();
 
+            SoilProfile1D soilProfile = DamEngineDataTestFactory.CreateSoilProfile1D(location.SoilList);
+            SetWaterpressureInterpolationModel(soilProfile.Layers);
+
             // This test is based on a 1D profile, to be combined with the surface line.
             var subSoilScenario = new SoilGeometryProbability();
             subSoilScenario.SoilProfileType = SoilProfileType.ProfileType1D;
             subSoilScenario.StiFileName = "";
             subSoilScenario.FullStiFileName = "";
             subSoilScenario.SoilProfile2D = null; 
             subSoilScenario.SegmentFailureMechanismType = SegmentFailureMechanismType.Stability;
+            subSoilScenario.SoilProfile1D = soilProfile;
 
-            subSoilScenario.SoilProfile1D = DamEngineDataTestFactory.CreateSoilProfile1D(location.SoilList);
-
             var damKernelInput = new DamKernelInput
             {
                 Location = location,
@@ -368,5 +371,12 @@
             return damKernelInput;
         }
 
+        private static void SetWaterpressureInterpolationModel(IEnumerable<SoilLayer1D> layers)
+        {
+            foreach (SoilLayer1D layer in layers)
+            {
+                layer.WaterpressureInterpolationModel = WaterpressureInterpolationModel.Hydrostatic;
+            }
+        }
     }
 }