Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/SurfaceLineAdapter.cs
===================================================================
diff -u -r6245 -r6401
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/SurfaceLineAdapter.cs	(.../SurfaceLineAdapter.cs)	(revision 6245)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/SurfaceLineAdapter.cs	(.../SurfaceLineAdapter.cs)	(revision 6401)
@@ -27,7 +27,6 @@
 using Deltares.DamEngine.Data.Geometry;
 using Deltares.DamEngine.Data.Geotechnics;
 using Deltares.DamEngine.Data.Standard;
-using MathNet.Numerics;
 
 namespace Deltares.DamEngine.Calculators.DikesDesign;
 
@@ -326,10 +325,10 @@
 
         // TODO: #the Following code is not correct; you should also look at the setting of Location.UseNewMinDistanceDikeToeStartDitch
         // First determine all coordinates
-        if (distanceToNewToe.IsSmaller(Location.NewMinDistanceDikeToeStartDitch, GeometryConstants.Tolerance) && 
+        if (distanceToNewToe.IsLessThan(Location.NewMinDistanceDikeToeStartDitch, GeometryConstants.Tolerance) && 
             !distanceToNewToe.IsNearEqual(ditchDefinition.Value.DistanceFromToe, GeometryConstants.Tolerance))
         {
-            // Ditch needs to be moved as it is less then the minimum required distance from the new toe
+            // Ditch needs to be moved as it is less than the minimum required distance from the new toe
             xDitchDikeSide = dikeToeAtPolder.X + Location.NewMinDistanceDikeToeStartDitch;
             if (Location.UseNewDitchDefinition)
             {