diff --git a/Source/Game/Entities/Object/Update/UpdateField.cs b/Source/Game/Entities/Object/Update/UpdateField.cs
index b890d29d4..004ef7f03 100644
--- a/Source/Game/Entities/Object/Update/UpdateField.cs
+++ b/Source/Game/Entities/Object/Update/UpdateField.cs
@@ -199,7 +199,7 @@ namespace Game.Entities
         public void AddValue(T value)
         {
             MarkChanged(_values.Count);
-            MarkAllUpdateMaskFields(_values[i]);
+            MarkAllUpdateMaskFields(value);
 
             _values.Add(value);
         }