diff --git a/MARC.Everest/DataTypes/ON.cs b/MARC.Everest/DataTypes/ON.cs
index 75d94c5b..67e001a0 100644
--- a/MARC.Everest/DataTypes/ON.cs
+++ b/MARC.Everest/DataTypes/ON.cs
@@ -171,7 +171,7 @@ internal static ON Parse(EN name)
             retVal.ControlActRoot = name.ControlActRoot;
             retVal.Flavor = name.Flavor;
             retVal.NullFlavor = name.NullFlavor != null ? name.NullFlavor.Clone() as CS<NullFlavor> : null;
-            retVal.UpdateMode = name.NullFlavor != null ? name.UpdateMode.Clone() as CS<UpdateMode> : null;
+            retVal.UpdateMode = name.UpdateMode != null ? name.UpdateMode.Clone() as CS<UpdateMode> : null;
             retVal.Use = name.Use != null ? new SET<CS<EntityNameUse>>(name.Use) : null;
             retVal.ValidTimeHigh = name.ValidTimeHigh;
             retVal.ValidTimeLow = name.ValidTimeLow;