diff --git a/rjpg b/rjpg
index 00313ab..04624cd 100755
--- a/rjpg
+++ b/rjpg
@@ -1,7 +1,7 @@
 #!/usr/local/bin/ruby
 # Resize jpeg files
 # $Id$
-# Last modified Sun Aug 31 14:17:42 2003 on firestorm
+# Last modified Sun Aug 31 17:27:47 2003 on firestorm
 
 # ����Ū�ʻȤ���
 # ����ǥ��쥯�ȥ�ˤ���������礭��JPEG�ե�����(�ǥ�����ǻ��ä��ޤޤ�
@@ -78,7 +78,8 @@
 _EOU_
 #'
 
-while (/^-.+/ =~ ($_ = ARGV[0].dup) && ARGV.shift)
+while (/^-.+/ =~ ($_ = ARGV[0]) && ARGV.shift)
+  $_= $_.dup
   break if ~/^--$/
   while ~/^-[A-z]/
     if ~/^-x$/