diff --git a/ChangeLog b/ChangeLog
index 1b4c6d37c9..6867eab7ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Jan  5 13:04:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ruby.c (proc_options): no need for intermediate object.
+
 Sat Jan  5 11:48:19 2008  Tanaka Akira  <akr@fsij.org>
 
 	* encoding.c (Init_Encoding): alias csWindows31J to Windows-31J.
diff --git a/ruby.c b/ruby.c
index 0fabd217da..3dae60226d 100644
--- a/ruby.c
+++ b/ruby.c
@@ -694,7 +694,7 @@ proc_options(int argc, char **argv, struct cmdline_options *opt)
 
 	  case 'F':
 	    if (*++s) {
-		rb_fs = rb_reg_new_str(rb_str_new2(s), 0);
+		rb_fs = rb_reg_new(s, strlen(s), 0);
 	    }
 	    break;