1 files changed, 13 insertions, 0 deletions
diff --git a/ext/tk/lib/tkextlib/iwidgets/extfileselectionbox.rb b/ext/tk/lib/tkextlib/iwidgets/extfileselectionbox.rb
index 282647893c..501f4c90a0 100644
--- a/ext/tk/lib/tkextlib/iwidgets/extfileselectionbox.rb
+++ b/ext/tk/lib/tkextlib/iwidgets/extfileselectionbox.rb
@@ -18,6 +18,19 @@ class Tk::Iwidgets::Extfileselectionbox
   WidgetClassName = 'Extfileselectionbox'.freeze
   WidgetClassNames[WidgetClassName] = self
 
+  def __strval_optkeys
+    super() + [
+      'dirslabel', 'fileslabel', 'filterlabel', 'mask', 'nomatchstring', 
+      'selectionlabel'
+    ]
+  end
+  private :__strval_optkeys
+
+  def __boolval_optkeys
+    super() + ['dirson', 'fileson', 'filteron', 'selectionon']
+  end
+  private :__boolval_optkeys
+
   def child_site
     window(tk_call(@path, 'childsite'))
   end