diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 02cd158a2..5b63f372b 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,7 @@
+2007-02-20  Kazunori Asayama <asayama@sm.sony.co.jp>
+
+	* libc/include/stdio.h: Add declaration for vsiprintf.
+
 2007-02-14  Patrick Mansfield <patmans@us.ibm.com>
 
 	Add a floating point environment for SPU (cell):
diff --git a/newlib/libc/include/stdio.h b/newlib/libc/include/stdio.h
index 4d3e0c597..61712334a 100644
--- a/newlib/libc/include/stdio.h
+++ b/newlib/libc/include/stdio.h
@@ -251,6 +251,7 @@ int	_EXFUN(vfiprintf, (FILE *, const char *, __VALIST));
 int	_EXFUN(vfiscanf, (FILE *, const char *, __VALIST));
 int	_EXFUN(vfscanf, (FILE *, const char *, __VALIST));
 int	_EXFUN(viprintf, (const char *, __VALIST));
+int	_EXFUN(vsiprintf, (char *, const char *, __VALIST));
 int	_EXFUN(viscanf, (const char *, __VALIST));
 int	_EXFUN(vscanf, (const char *, __VALIST));
 int	_EXFUN(vsiscanf, (const char *, const char *, __VALIST));