diff --git a/ChangeLog b/ChangeLog
index b327b5660b..4e83053698 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,7 @@
-Wed Oct 29 09:23:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Wed Oct 29 09:30:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ruby.c (load_file_internal): use ASCII-8BIT to prevent conversion.
+	  [ruby-core:19579]
 
 	* ruby.c (load_file_internal): cache common interned IDs.
 
diff --git a/ruby.c b/ruby.c
index 556944ff81..7bbc5b0139 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1255,7 +1255,7 @@ load_file_internal(VALUE arg)
 	int no_ext_enc = !opt->ext.enc.name;
 	int no_int_enc = !opt->intern.enc.name;
 
-	enc = rb_usascii_encoding();
+	enc = rb_ascii8bit_encoding();
 	rb_funcall(f, set_encoding, 1, rb_enc_from_encoding(enc));
 
 	if (opt->xflag) {
@@ -1356,7 +1356,7 @@ load_file_internal(VALUE arg)
 	enc = rb_locale_encoding();
     }
     else {
-	enc = rb_usascii_encoding();
+	enc = rb_ascii8bit_encoding();
     }
     rb_funcall(f, set_encoding, 1, rb_enc_from_encoding(enc));
     tree = (NODE *)rb_parser_compile_file(parser, fname, f, line_start);