Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Create/Piping/RingtoetsPipingSurfaceLineCreateExtensions.cs
===================================================================
diff -u -r01ff2c58c13df8f42661ae3e446dc2caaa94247e -ra294987551b0b2d8a27b6e1bc6235b0e2351b6f4
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Create/Piping/RingtoetsPipingSurfaceLineCreateExtensions.cs	(.../RingtoetsPipingSurfaceLineCreateExtensions.cs)	(revision 01ff2c58c13df8f42661ae3e446dc2caaa94247e)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Create/Piping/RingtoetsPipingSurfaceLineCreateExtensions.cs	(.../RingtoetsPipingSurfaceLineCreateExtensions.cs)	(revision a294987551b0b2d8a27b6e1bc6235b0e2351b6f4)
@@ -56,8 +56,8 @@
             var entity = new SurfaceLineEntity
             {
                 Name = surfaceLine.Name,
-                ReferenceLineIntersectionX = Convert.ToDecimal(surfaceLine.ReferenceLineIntersectionWorldPoint.X),
-                ReferenceLineIntersectionY = Convert.ToDecimal(surfaceLine.ReferenceLineIntersectionWorldPoint.Y)
+                ReferenceLineIntersectionX = surfaceLine.ReferenceLineIntersectionWorldPoint.X.ToNaNAsNull(),
+                ReferenceLineIntersectionY = surfaceLine.ReferenceLineIntersectionWorldPoint.Y.ToNaNAsNull()
             };
             CreateSurfaceLinePointEntities(surfaceLine, registry, entity);
             CreateCharacteristicPointEntities(surfaceLine, registry);