diff --git a/include/boost/predef.h b/include/boost/predef.h
index 36d731f..4965337 100644
--- a/include/boost/predef.h
+++ b/include/boost/predef.h
@@ -17,6 +17,7 @@ http://www.boost.org/LICENSE_1_0.txt)
 #include <boost/predef/os.h>
 #include <boost/predef/other.h>
 #include <boost/predef/platform.h>
+#include <boost/predef/hardware.h>
 
 #include <boost/predef/version.h>