From ced887cd61df25e76019b1236a2e76215e2ff64a Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Wed, 17 Apr 2002 04:34:34 +0000
Subject: [PATCH] More cleanups for mpl_v2

[SVN r13516]
---
 include/boost/python/object/value_holder.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/boost/python/object/value_holder.hpp b/include/boost/python/object/value_holder.hpp
index 49251921..b586d6e9 100644
--- a/include/boost/python/object/value_holder.hpp
+++ b/include/boost/python/object/value_holder.hpp
@@ -14,6 +14,7 @@
 # include <boost/python/object/forward.hpp>
 # include <boost/python/detail/preprocessor.hpp>
 # include <boost/preprocessor/enum_params.hpp>
+# include <boost/preprocessor/expr_if.hpp>
 
 namespace boost { namespace python { namespace objects {