diff --git a/ChangeLog b/ChangeLog
index 51d5a31162..fcaf7952c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,4 @@
-Sat Aug 25 16:13:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Sat Aug 25 17:05:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* io.c (swallow): removed condition using an unset variable.
 
@@ -6,6 +6,8 @@ Sat Aug 25 16:13:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* string.c (rb_str_splice): return from void funtion.
 
+	* include/ruby/encoding.h (rb_enc_str_new): prototype added.
+
 Sat Aug 25 11:45:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* encoding.c: provide basic features for M17N.
diff --git a/include/ruby/encoding.h b/include/ruby/encoding.h
index 1e0dffd86c..d23238a186 100644
--- a/include/ruby/encoding.h
+++ b/include/ruby/encoding.h
@@ -32,6 +32,7 @@ rb_encoding* rb_enc_check(VALUE,VALUE);
 void rb_enc_associate(VALUE, rb_encoding*);
 void rb_enc_copy(VALUE, VALUE);
 
+VALUE rb_enc_str_new(const char*, long len, rb_encoding*);
 long rb_enc_strlen(const char*, const char*, rb_encoding*);
 char* rb_enc_nth(const char*, const char*, int, rb_encoding*);