diff --git a/Projects/Server/Items/Container.cs b/Projects/Server/Items/Container.cs
index 97fe9b663..60c6e7eeb 100644
--- a/Projects/Server/Items/Container.cs
+++ b/Projects/Server/Items/Container.cs
@@ -99,6 +99,9 @@ public partial class Container : Item
     [SerializableFieldSaveFlag(1)]
     private bool ShouldSerializeGumpId() => _gumpID != -1;
 
+    [SerializableFieldDefault(1)]
+    private int GumpIDDefaultValue() => -1;
+
     [EncodedInt]
     [SerializableProperty(2)]
     [CommandProperty(AccessLevel.GameMaster)]
@@ -115,6 +118,9 @@ public partial class Container : Item
     [SerializableFieldSaveFlag(2)]
     private bool ShouldSerializeDropSound() => _dropSound != -1;
 
+    [SerializableFieldDefault(2)]
+    private int DropSoundDefaultValue() => -1;
+
     [CommandProperty(AccessLevel.GameMaster)]
     public virtual int MaxWeight => Parent is Container { MaxWeight: 0 } ? 0 : DefaultMaxWeight;