--- a/tools/probe_mecab.pl
+++ b/tools/probe_mecab.pl
@@ -5,7 +5,7 @@
 use Getopt::Long;
 use ExtUtils::MakeMaker ();
 
-my $default_encoding = 'euc-jp';
+my $default_encoding = 'utf-8';
 my $default_config;
 if (! GetOptions(
     "encoding=s" => \$default_encoding,
@@ -133,4 +133,4 @@
     include  => $include,
     encoding => $encoding,
     config   => $mecab_config,
-};
\ No newline at end of file
+};
