diff --git a/ChangeLog b/ChangeLog
index c6ebb49a49..b0f3355ac5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Jan 26 09:30:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/encoding.h (rb_usascii_encindex): added prototype.
+
+	* include/ruby/intern.h (rb_usascii_str_new, rb_usascii_str_new2):
+	  ditto.
+
 Sat Jan 26 09:17:13 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* string.c (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when
diff --git a/include/ruby/encoding.h b/include/ruby/encoding.h
index 76ce8597d7..bebf13bb42 100644
--- a/include/ruby/encoding.h
+++ b/include/ruby/encoding.h
@@ -163,6 +163,7 @@ rb_encoding *rb_utf8_encoding(void);
 rb_encoding *rb_usascii_encoding(void);
 rb_encoding *rb_locale_encoding(void);
 rb_encoding *rb_default_external_encoding(void);
+int rb_usascii_encindex(void);
 VALUE rb_enc_default_external(void);
 void rb_enc_set_default_external(VALUE encoding);
 VALUE rb_locale_charmap(VALUE klass);
diff --git a/include/ruby/intern.h b/include/ruby/intern.h
index e552c1f0e0..141cf94c24 100644
--- a/include/ruby/intern.h
+++ b/include/ruby/intern.h
@@ -499,6 +499,8 @@ VALUE rb_tainted_str_new2(const char*);
 VALUE rb_str_buf_new(long);
 VALUE rb_str_buf_new2(const char*);
 VALUE rb_str_tmp_new(long);
+VALUE rb_usascii_str_new(const char*, long);
+VALUE rb_usascii_str_new2(const char*);
 void rb_str_free(VALUE);
 void rb_str_shared_replace(VALUE, VALUE);
 VALUE rb_str_buf_append(VALUE, VALUE);