--- utf_string.hh.orig	Thu Jul 17 21:03:53 2003
+++ utf_string.hh	Thu Jul 17 21:04:03 2003
@@ -1,6 +1,7 @@
 #ifndef UTF_STRING_HH
 #define UTF_STRING_HH
 
+#include <assert.h>
 #include <string>
 #include <stdio.h>
 #include "functions.hh"