diff --git a/include/boost/container/adaptive_pool.hpp b/include/boost/container/adaptive_pool.hpp
index b9037b7..08e4f62 100644
--- a/include/boost/container/adaptive_pool.hpp
+++ b/include/boost/container/adaptive_pool.hpp
@@ -132,6 +132,10 @@ class adaptive_pool
    adaptive_pool(const adaptive_pool &) BOOST_NOEXCEPT_OR_NOTHROW
    {}
 
+   //!Copy assignment from other adaptive_pool.
+   adaptive_pool & operator=(const adaptive_pool &) BOOST_NOEXCEPT_OR_NOTHROW
+   {  return *this;  }
+
    //!Copy constructor from related adaptive_pool.
    template<class T2>
    adaptive_pool
@@ -442,6 +446,10 @@ class private_adaptive_pool
    private_adaptive_pool(const private_adaptive_pool &) BOOST_NOEXCEPT_OR_NOTHROW
    {}
 
+   //!Copy assignment from other adaptive_pool.
+   private_adaptive_pool & operator=(const private_adaptive_pool &) BOOST_NOEXCEPT_OR_NOTHROW
+   {  return *this;  }
+
    //!Copy constructor from related private_adaptive_pool.
    template<class T2>
    private_adaptive_pool