Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs
===================================================================
diff -u -r5c348ad608dfd7af011130adf085ed0cc8272730 -r9d44bfb40ac6f92504318d5fffa2c82351d8f4bd
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 5c348ad608dfd7af011130adf085ed0cc8272730)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 9d44bfb40ac6f92504318d5fffa2c82351d8f4bd)
@@ -368,8 +368,10 @@
             }
 
             Name = fromSurfaceLine.Name;
-            ReferenceLineIntersectionWorldPoint = new Point2D(fromSurfaceLine.ReferenceLineIntersectionWorldPoint.X,
-                                                              fromSurfaceLine.ReferenceLineIntersectionWorldPoint.Y);
+            ReferenceLineIntersectionWorldPoint = fromSurfaceLine.ReferenceLineIntersectionWorldPoint != null
+                                                      ? new Point2D(fromSurfaceLine.ReferenceLineIntersectionWorldPoint.X,
+                                                                    fromSurfaceLine.ReferenceLineIntersectionWorldPoint.Y)
+                                                      : null;
             SetGeometry(fromSurfaceLine.Points);
             ClearCharacteristicPoints();
             SetCharacteristicPoints(fromSurfaceLine);