diff --git a/include/boost/container/detail/compare_functors.hpp b/include/boost/container/detail/compare_functors.hpp
index 09ae7bc..e9e5a51 100644
--- a/include/boost/container/detail/compare_functors.hpp
+++ b/include/boost/container/detail/compare_functors.hpp
@@ -152,7 +152,7 @@ struct key_node_pred
 template<class Pred>
 class not_pred
 {
-   Pred m_p;
+   BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS Pred m_p;
 
    public:
    BOOST_CONTAINER_FORCEINLINE explicit not_pred(const Pred &p)