$OpenBSD$
--- lib-src/libnyquist/snd/snd.h.orig	Tue Jan 11 20:57:17 2005
+++ lib-src/libnyquist/snd/snd.h	Tue Jan 11 21:02:43 2005
@@ -15,6 +15,7 @@ error here
 
 /* Standard includes */
 #include <stdlib.h>
+#include <unistd.h>
 
 #include "sndconfig.h"
 
