diff --git a/test/ruby/test_io_m17n.rb b/test/ruby/test_io_m17n.rb
index 737eebb3e9..1220170e1b 100644
--- a/test/ruby/test_io_m17n.rb
+++ b/test/ruby/test_io_m17n.rb
@@ -407,7 +407,6 @@ EOT
       defext = Encoding.default_external
       Encoding.default_external = Encoding::UTF_8
       open("tmp", "rt") {|f|
-        p f.read;f.rewind
         s = f.getc
         assert_equal(false, s.valid_encoding?)
         assert_equal("\xE3".force_encoding("UTF-8"), s)