diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 379633479..a73c24713 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,7 @@
+2003-01-20  Christopher Faylor  <cgf@redhat.com>
+
+	* libc/include/sys/unistd.h: Add rresvport declaration for cygwin.
+
 2003-01-18  Nick Clifton  <nickc@redhat.com>
 
 	* libc/include/machine/ieeefp.h : Define __IEEE_BIG_ENDIAN,
diff --git a/newlib/libc/include/sys/unistd.h b/newlib/libc/include/sys/unistd.h
index b5ed650ed..1e5f519dd 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -88,7 +88,8 @@ ssize_t _EXFUN(pread, (int __fd, void *__buf, size_t __nbytes, off_t __offset));
 ssize_t _EXFUN(pwrite, (int __fd, const void *__buf, size_t __nbytes, off_t __offset));
 _READ_WRITE_RETURN_TYPE _EXFUN(read, (int __fd, void *__buf, size_t __nbyte ));
 #if defined(__CYGWIN__)
-int	_EXFUN(revoke, (char *path));
+int	_EXFUN(rresvport, (int *__alport));
+int	_EXFUN(revoke, (char *__path));
 #endif
 int     _EXFUN(rmdir, (const char *__path ));
 #if defined(__CYGWIN__)