1 files changed, 7 insertions, 4 deletions
diff --git a/ext/tk/lib/tkextlib/tile/sizegrip.rb b/ext/tk/lib/tkextlib/tile/sizegrip.rb
index c5068919a4..d7da0a4075 100644
--- a/ext/tk/lib/tkextlib/tile/sizegrip.rb
+++ b/ext/tk/lib/tkextlib/tile/sizegrip.rb
@@ -13,17 +13,20 @@ module Tk
   end
 end
 
-Tk.__set_toplevel_aliases__(:Ttk, Tk::Tile::Sizegrip, :TkSizegrip, :TkSizeGrip)
-
-
 class Tk::Tile::SizeGrip < TkWindow
   include Tk::Tile::TileWidget
 
   TkCommandNames = ['::ttk::sizegrip'.freeze].freeze
   WidgetClassName = 'TSizegrip'.freeze
-  WidgetClassNames[WidgetClassName] = self
+  WidgetClassNames[WidgetClassName] ||= self
 
   def self.style(*args)
     [self::WidgetClassName, *(args.map!{|a| _get_eval_string(a)})].join('.')
   end
 end
+
+#Tk.__set_toplevel_aliases__(:Ttk, Tk::Tile::Sizegrip,
+#                            :TkSizegrip, :TkSizeGrip)
+Tk.__set_loaded_toplevel_aliases__('tkextlib/tile/sizegrip.rb',
+                                   :Ttk, Tk::Tile::Sizegrip, 
+                                   :TkSizegrip, :TkSizeGrip)