$NetBSD$

--- src/support/htdigest.c.orig	2009-03-04 09:50:56.000000000 +0300
+++ src/support/htdigest.c
@@ -32,7 +32,7 @@
 #endif
 #include "ap.h"
 #include "ap_md5.h"
-#if defined(MPE) || defined(QNX) || defined(WIN32) || defined(__TANDEM) || defined(OS390) || defined(BEOS) || defined(BONE)
+#if defined(MPE) || defined(QNX) || defined(NTO) || defined(WIN32) || defined(__TANDEM) || defined(OS390) || defined(BEOS) || defined(BONE)
 #include <signal.h>
 #else
 #include <sys/signal.h>
