Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Kernels/UpliftVan/UpliftVanKernelWrapper.cs
===================================================================
diff -u -r0e809897e28ca8673b98ec8abb68b42939a3a647 -r08435352faa218dc7a27da54a255c497353dff24
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Kernels/UpliftVan/UpliftVanKernelWrapper.cs	(.../UpliftVanKernelWrapper.cs)	(revision 0e809897e28ca8673b98ec8abb68b42939a3a647)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Kernels/UpliftVan/UpliftVanKernelWrapper.cs	(.../UpliftVanKernelWrapper.cs)	(revision 08435352faa218dc7a27da54a255c497353dff24)
@@ -49,6 +49,7 @@
                 SearchAlgorithm = SearchAlgorithm.Grid,
                 GridOrientation = GridOrientation.Inwards,
                 SlipPlaneConstraints = new SlipPlaneConstraints(),
+                SlipCircle = new SlipCircle(),
                 GeneticAlgorithmOptions = new GeneticAlgorithmOptions
                 {
                     EliteCount = 2,
@@ -65,6 +66,11 @@
                     Seed = 1
                 }
             };
+
+            FactorOfStability = double.NaN;
+            ZValue = double.NaN;
+            ForbiddenZonesXEntryMin = double.NaN;
+            ForbiddenZonesXEntryMax = double.NaN;
         }
 
         public SoilModel SoilModel
@@ -127,10 +133,7 @@
         {
             set
             {
-                stabilityModel.SlipCircle = new SlipCircle
-                {
-                    Auto = value
-                };
+                stabilityModel.SlipCircle.Auto = value;
             }
         }
 
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Kernels/UpliftVan/UpliftVanKernelWrapperTest.cs
===================================================================
diff -u -rf2821a4b299043f78c93fb0acf5851081f96961b -r08435352faa218dc7a27da54a255c497353dff24
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Kernels/UpliftVan/UpliftVanKernelWrapperTest.cs	(.../UpliftVanKernelWrapperTest.cs)	(revision f2821a4b299043f78c93fb0acf5851081f96961b)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Kernels/UpliftVan/UpliftVanKernelWrapperTest.cs	(.../UpliftVanKernelWrapperTest.cs)	(revision 08435352faa218dc7a27da54a255c497353dff24)
@@ -35,6 +35,12 @@
 
             // Assert
             Assert.IsInstanceOf<IUpliftVanKernel>(kernel);
+            Assert.IsNaN(kernel.FactorOfStability);
+            Assert.IsNaN(kernel.ZValue);
+            Assert.IsNaN(kernel.ForbiddenZonesXEntryMin);
+            Assert.IsNaN(kernel.ForbiddenZonesXEntryMax);
+            Assert.IsNull(kernel.SlidingCurveResult);
+            Assert.IsNull(kernel.SlipPlaneResult);
         }
     }
 }
\ No newline at end of file