Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/PipingSoilProfileUpdateExtensions.cs
===================================================================
diff -u -ra5714fc0488030773fff50dfc82041c6cb9edc2f -ra294987551b0b2d8a27b6e1bc6235b0e2351b6f4
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/PipingSoilProfileUpdateExtensions.cs	(.../PipingSoilProfileUpdateExtensions.cs)	(revision a5714fc0488030773fff50dfc82041c6cb9edc2f)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/PipingSoilProfileUpdateExtensions.cs	(.../PipingSoilProfileUpdateExtensions.cs)	(revision a294987551b0b2d8a27b6e1bc6235b0e2351b6f4)
@@ -65,7 +65,7 @@
                 o => o.SoilProfileEntityId);
 
             entity.Name = profile.Name;
-            entity.Bottom = Convert.ToDecimal(profile.Bottom);
+            entity.Bottom = profile.Bottom.ToNaNAsNull();
 
             foreach (var pipingSoilLayer in profile.Layers)
             {