Index: boost/python/detail/translate_exception.hpp
===================================================================
--- boost/python/detail/translate_exception.hpp	(revision 50228)
+++ boost/python/detail/translate_exception.hpp	(working copy)
@@ -9,6 +9,7 @@
 
 # include <boost/call_traits.hpp>
 # include <boost/type_traits/add_const.hpp>
+# include <boost/type_traits/add_reference.hpp>
 
 # include <boost/function/function0.hpp>