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-rw-r--r--boost/units/systems/si/codata/deuteron_constants.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/boost/units/systems/si/codata/deuteron_constants.hpp b/boost/units/systems/si/codata/deuteron_constants.hpp
index a92b6664db..167c576756 100644
--- a/boost/units/systems/si/codata/deuteron_constants.hpp
+++ b/boost/units/systems/si/codata/deuteron_constants.hpp
@@ -11,6 +11,7 @@
#ifndef BOOST_UNITS_CODATA_DEUTERON_CONSTANTS_HPP
#define BOOST_UNITS_CODATA_DEUTERON_CONSTANTS_HPP
+#include <boost/units/quantity.hpp>
#include <boost/units/static_constant.hpp>
#include <boost/units/systems/detail/constants.hpp>