diff --git a/include/boost/python/object/class.hpp b/include/boost/python/object/class.hpp
index b86f660c..466b6e44 100644
--- a/include/boost/python/object/class.hpp
+++ b/include/boost/python/object/class.hpp
@@ -39,7 +39,6 @@ struct BOOST_PYTHON_DECL class_base : private noncopyable
     void add_property(char const* name, ref const& fget);
     void add_property(char const* name, ref const& fget, ref const& fset);
     void setattr(char const* name, ref const&);
-    void enable_pickle_support();
  private:
     ref m_object;
 };