Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs
===================================================================
diff -u -r411b50528bbd83c02ffdcae699895529b2b34bf7 -rc33fbb6a840ef596c665774b609f82b948f3b512
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 411b50528bbd83c02ffdcae699895529b2b34bf7)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision c33fbb6a840ef596c665774b609f82b948f3b512)
@@ -347,7 +347,7 @@
         /// L-coordinate being monotonically non-decreasing</param>
         /// <exception cref="ArgumentOutOfRangeException"><paramref name="localCoordinateL"/> falls outside the L-coordiante span
         /// defined by <paramref name="geometryInLocalCoordinates"/>.</exception>
-        private static void ValidateInRange(double localCoordinateL, Point2D[] geometryInLocalCoordinates)
+        public void ValidateInRange(double localCoordinateL, Point2D[] geometryInLocalCoordinates)
         {
             Point2D firstLocalPoint = geometryInLocalCoordinates.First();
             Point2D lastLocalPoint = geometryInLocalCoordinates.Last();