diff --git a/Source/Editor/CustomEditors/Editors/GenericEditor.cs b/Source/Editor/CustomEditors/Editors/GenericEditor.cs
index 8510fa9ff..6a20b6a28 100644
--- a/Source/Editor/CustomEditors/Editors/GenericEditor.cs
+++ b/Source/Editor/CustomEditors/Editors/GenericEditor.cs
@@ -419,12 +419,18 @@ namespace FlaxEditor.CustomEditors.Editors
             }
         }
 
+        /// <inheritdoc />
+        internal override void Initialize(CustomEditorPresenter presenter, LayoutElementsContainer layout, ValueContainer values)
+        {
+            _isNull = values != null && values.IsNull;
+
+            base.Initialize(presenter, layout, values);
+        }
+
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
         {
-            var values = Values;
             _visibleIfCaches = null;
-            _isNull = values != null && values.IsNull;
 
             // Collect items to edit
             List<ItemInfo> items;