Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSectionResultEntityReadExtensions.cs
===================================================================
diff -u -ra5714fc0488030773fff50dfc82041c6cb9edc2f -ra294987551b0b2d8a27b6e1bc6235b0e2351b6f4
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSectionResultEntityReadExtensions.cs	(.../PipingSectionResultEntityReadExtensions.cs)	(revision a5714fc0488030773fff50dfc82041c6cb9edc2f)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSectionResultEntityReadExtensions.cs	(.../PipingSectionResultEntityReadExtensions.cs)	(revision a294987551b0b2d8a27b6e1bc6235b0e2351b6f4)
@@ -56,7 +56,7 @@
             }
             sectionResult.StorageId = entity.PipingSectionResultEntityId;
             sectionResult.AssessmentLayerOne = Convert.ToBoolean(entity.LayerOne);
-            sectionResult.AssessmentLayerThree = (RoundedDouble) entity.LayerThree.ToNanableDouble();
+            sectionResult.AssessmentLayerThree = (RoundedDouble) entity.LayerThree.ToNullAsNaN();
         }
     }
 }
\ No newline at end of file