--- libclamav/others.h.orig	2009-10-29 08:11:34.000000000 -0200
+++ libclamav/others.h	2009-10-29 08:11:45.000000000 -0200
@@ -29,6 +29,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include "cltypes.h"
 
 #include "clamav.h"