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-rw-r--r--ext/tk/lib/tkextlib/tktable/tktable.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/tk/lib/tkextlib/tktable/tktable.rb b/ext/tk/lib/tkextlib/tktable/tktable.rb
index 8e9ba8b8c..161f4e454 100644
--- a/ext/tk/lib/tkextlib/tktable/tktable.rb
+++ b/ext/tk/lib/tkextlib/tktable/tktable.rb
@@ -340,7 +340,7 @@ class Tk::TkTable
#################################
def __validation_class_list
- super <<
+ super() <<
BrowseCommand << CellCommand << SelectionCommand << ValidateCommand
end