diff --git a/include/boost/intrusive/avltree_algorithms.hpp b/include/boost/intrusive/avltree_algorithms.hpp
index e5bcfde..a0bdd77 100644
--- a/include/boost/intrusive/avltree_algorithms.hpp
+++ b/include/boost/intrusive/avltree_algorithms.hpp
@@ -50,6 +50,13 @@ struct avltree_node_cloner
       NodeTraits::set_balance(n, NodeTraits::get_balance(p));
       return n;
    }
+
+   node_ptr operator()(const node_ptr & p) const
+   {
+      node_ptr n = base_t::get()(p);
+      NodeTraits::set_balance(n, NodeTraits::get_balance(p));
+      return n;
+   }
 };
 
 namespace detail {
diff --git a/include/boost/intrusive/detail/key_nodeptr_comp.hpp b/include/boost/intrusive/detail/key_nodeptr_comp.hpp
index 790ce72..bf7810b 100644
--- a/include/boost/intrusive/detail/key_nodeptr_comp.hpp
+++ b/include/boost/intrusive/detail/key_nodeptr_comp.hpp
@@ -44,6 +44,7 @@ struct key_nodeptr_comp
       static const bool value = is_same<T, const_node_ptr>::value || is_same<T, node_ptr>::value;
    };
 
+   //key_forward
    template<class T>
    const value_type & key_forward
       (const T &node, typename enable_if_c<is_node_ptr<T>::value>::type * = 0) const
@@ -53,13 +54,23 @@ struct key_nodeptr_comp
    const T & key_forward(const T &key, typename enable_if_c<!is_node_ptr<T>::value>::type* = 0) const
    {  return key;  }
 
+   //operator() 1 arg
+   template<class KeyType>
+   bool operator()(const KeyType &key1) const
+   {  return base_t::get()(this->key_forward(key1));  }
+
+   template<class KeyType>
+   bool operator()(const KeyType &key1)
+   {  return base_t::get()(this->key_forward(key1));  }
+
+   //operator() 2 arg
    template<class KeyType, class KeyType2>
    bool operator()(const KeyType &key1, const KeyType2 &key2) const
    {  return base_t::get()(this->key_forward(key1), this->key_forward(key2));  }
 
-   template<class KeyType>
-   bool operator()(const KeyType &key1) const
-   {  return base_t::get()(this->key_forward(key1));  }
+   template<class KeyType, class KeyType2>
+   bool operator()(const KeyType &key1, const KeyType2 &key2)
+   {  return base_t::get()(this->key_forward(key1), this->key_forward(key2));  }
 
    const ValueTraits *const traits_;
 };