Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/RingtoetsPipingSurfaceLineUpdateExtensions.cs
===================================================================
diff -u -ra5714fc0488030773fff50dfc82041c6cb9edc2f -ra294987551b0b2d8a27b6e1bc6235b0e2351b6f4
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/RingtoetsPipingSurfaceLineUpdateExtensions.cs	(.../RingtoetsPipingSurfaceLineUpdateExtensions.cs)	(revision a5714fc0488030773fff50dfc82041c6cb9edc2f)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/RingtoetsPipingSurfaceLineUpdateExtensions.cs	(.../RingtoetsPipingSurfaceLineUpdateExtensions.cs)	(revision a294987551b0b2d8a27b6e1bc6235b0e2351b6f4)
@@ -67,8 +67,8 @@
                 o => o.SurfaceLineEntityId);
 
             entity.Name = surfaceLine.Name;
-            entity.ReferenceLineIntersectionX = Convert.ToDecimal(surfaceLine.ReferenceLineIntersectionWorldPoint.X);
-            entity.ReferenceLineIntersectionY = Convert.ToDecimal(surfaceLine.ReferenceLineIntersectionWorldPoint.Y);
+            entity.ReferenceLineIntersectionX = surfaceLine.ReferenceLineIntersectionWorldPoint.X.ToNaNAsNull();
+            entity.ReferenceLineIntersectionY = surfaceLine.ReferenceLineIntersectionWorldPoint.Y.ToNaNAsNull();
 
             UpdateGeometry(surfaceLine, entity, registry);
             UpdateCharacteristicPoints(surfaceLine, entity, registry);