--- nono/lib/header.h	2026/04/29 17:05:39	1.1.1.21
+++ nono/lib/header.h	2026/04/29 17:05:52	1.1.1.22
@@ -12,7 +12,6 @@
 
 #include "config-nono.h"
 #include <cassert>
-#include <cctype>
 #include <cerrno>
 #include <cstdarg>
 #include <cstdio>