Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Common/UpliftHelper.cs
===================================================================
diff -u -r5628 -r5633
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Common/UpliftHelper.cs	(.../UpliftHelper.cs)	(revision 5628)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Common/UpliftHelper.cs	(.../UpliftHelper.cs)	(revision 5633)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Deltares.DamEngine.Calculators.Uplift;
 using Deltares.DamEngine.Data.General;
 using Deltares.DamEngine.Data.General.PlLines;
@@ -102,7 +103,7 @@
             XSoilGeometry2DOrigin = location.XSoilGeometry2DOrigin
         };
         UpliftLocationAndResult upliftLocationAndResult = upliftLocationDeterminator.GetLocationWithLowestUpliftFactor();
-        xCoordLowestUpliftFactor = upliftLocationAndResult?.X ?? surfaceLine.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.DikeToeAtPolder).X;
+        xCoordLowestUpliftFactor = upliftLocationAndResult?.X ?? double.NaN;
         return upliftLocationAndResult?.UpliftFactor;
     }
 }
\ No newline at end of file