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-rw-r--r--ext/tk/sample/tktextio.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/tk/sample/tktextio.rb b/ext/tk/sample/tktextio.rb
index 0b78f45b10..4573bcebdf 100644
--- a/ext/tk/sample/tktextio.rb
+++ b/ext/tk/sample/tktextio.rb
@@ -108,7 +108,7 @@ class TkTextIO < TkText
@lineno = 0
@line_offset = 0
- @hist_max = opts['hist_size']
+ @hist_max = opts['hist_size'].to_i
@hist_index = 0
@history = Array.new(@hist_max)
@history[0] = ''