$OpenBSD$
--- lib/Interprocess.h.orig	Mon Apr  2 15:14:38 2012
+++ lib/Interprocess.h	Fri Jun 28 19:29:36 2013
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <boost/interprocess/sync/scoped_lock.hpp>
+#include <sys/param.h>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/interprocess_condition.hpp>
 #include <boost/interprocess/mapped_region.hpp>
@@ -55,4 +56,4 @@ struct SharedMem 
 		delete mr;
 		boost::interprocess::shared_memory_object::remove("vcmi_memory");
 	}
-};
\ No newline at end of file
+};