diff --git a/Runtime/AvatarCreator/Scripts/Interfaces/IAssetData.cs b/Runtime/AvatarCreator/Scripts/Interfaces/IAssetData.cs
index 86861126..b6688f39 100644
--- a/Runtime/AvatarCreator/Scripts/Interfaces/IAssetData.cs
+++ b/Runtime/AvatarCreator/Scripts/Interfaces/IAssetData.cs
@@ -1,7 +1,10 @@
+using UnityEngine.Scripting;
+
 namespace ReadyPlayerMe.AvatarCreator
 {
     public interface IAssetData
     {
+        [Preserve]
         public string Id { get; set; }
         public AssetType AssetType { get; set; }
     }