--- aspell-0.50.3/prog/checker_string.hpp.orig	2002-09-23 21:34:52.000000000 -0400
+++ aspell-0.50.3/prog/checker_string.hpp	2003-07-29 22:33:53.000000000 -0400
@@ -5,6 +5,7 @@
 // it at http://www.gnu.org/.
 
 #include <stdio.h>
+#include <assert.h>
 
 #include "aspell.h"