diff --git a/CSharp/Plugins/UniversalEditor.Essential/DataFormats/FileSystem/UXT/UXTDataFormat.cs b/CSharp/Plugins/UniversalEditor.Essential/DataFormats/FileSystem/UXT/UXTDataFormat.cs
index dbec0ef1..dc6eb4d8 100644
--- a/CSharp/Plugins/UniversalEditor.Essential/DataFormats/FileSystem/UXT/UXTDataFormat.cs
+++ b/CSharp/Plugins/UniversalEditor.Essential/DataFormats/FileSystem/UXT/UXTDataFormat.cs
@@ -35,7 +35,7 @@ namespace UniversalEditor.DataFormats.FileSystem.UXT
         protected override void LoadInternal(ref ObjectModel objectModel)
         {
             FileSystemObjectModel fsom = (objectModel as FileSystemObjectModel);
-            if (fsom == null) return;
+            if (fsom == null) throw new ObjectModelNotSupportedException();
 
             Reader br = base.Accessor.Reader;