--- Wnn/etc/dic_atojis.c.orig
+++ Wnn/etc/dic_atojis.c
@@ -53,6 +53,7 @@
 #include "jdata.h"
 #include "wnn_os.h"
 #include "wnn_string.h"
+#include <string.h>
 
 static int	keta_4;
 
