diff --git a/Plugins/HoudiniEngineUnity/Scripts/Asset/HEU_HoudiniAsset.cs b/Plugins/HoudiniEngineUnity/Scripts/Asset/HEU_HoudiniAsset.cs
index 62dad979..a024fa5f 100644
--- a/Plugins/HoudiniEngineUnity/Scripts/Asset/HEU_HoudiniAsset.cs
+++ b/Plugins/HoudiniEngineUnity/Scripts/Asset/HEU_HoudiniAsset.cs
@@ -565,7 +565,7 @@ internal AssetCookResult GetLastCookResult()
 
         [SerializeField] private long _sessionID = HEU_SessionData.INVALID_SESSION_ID;
 
-        [SerializeField] internal bool WarnedPrefabNotSupported { get; set; }
+        [field: SerializeField] internal bool WarnedPrefabNotSupported { get; set; }
 
         // UI TOGGLES -------------------------------------------------------------------------------------------------
 
@@ -595,7 +595,7 @@ internal AssetCookResult GetLastCookResult()
 
         [SerializeField] private HEU_InstanceInputUIState _instanceInputUIState;
 
-        [SerializeField]
+		//! No attribute needed here (explicit field already serialized above)
         internal HEU_InstanceInputUIState InstanceInputUIState
         {
             get { return _instanceInputUIState; }
@@ -5679,4 +5679,5 @@ public bool IsEquivalentTo(HEU_HoudiniAsset asset)
             return bResult;
         }
     }
-} // HoudiniEngineUnity
\ No newline at end of file
+} // HoudiniEngineUnity
+