Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/SurfaceLineEntityReadExtensions.cs
===================================================================
diff -u -ra5714fc0488030773fff50dfc82041c6cb9edc2f -ra294987551b0b2d8a27b6e1bc6235b0e2351b6f4
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/SurfaceLineEntityReadExtensions.cs	(.../SurfaceLineEntityReadExtensions.cs)	(revision a5714fc0488030773fff50dfc82041c6cb9edc2f)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/SurfaceLineEntityReadExtensions.cs	(.../SurfaceLineEntityReadExtensions.cs)	(revision a294987551b0b2d8a27b6e1bc6235b0e2351b6f4)
@@ -61,8 +61,8 @@
                 StorageId = entity.SurfaceLineEntityId,
                 Name = entity.Name,
                 ReferenceLineIntersectionWorldPoint = new Point2D(
-                    Convert.ToDouble(entity.ReferenceLineIntersectionX),
-                    Convert.ToDouble(entity.ReferenceLineIntersectionY))
+                    entity.ReferenceLineIntersectionX.ToNullAsNaN(),
+                    entity.ReferenceLineIntersectionY.ToNullAsNaN())
             };
             entity.ReadSurfaceLineGeometryAndCharacteristicPoints(surfaceLine, collector);