1 files changed, 6 insertions, 1 deletions
diff --git a/src/zmq_engine.hpp b/src/zmq_engine.hpp
index bdd2a5d..363eaaf 100644
--- a/src/zmq_engine.hpp
+++ b/src/zmq_engine.hpp
@@ -39,7 +39,6 @@ namespace zmq
     public:
 
         zmq_engine_t (fd_t fd_, const options_t &options_);
-        ~zmq_engine_t ();
 
         //  i_engine interface implementation.
         void plug (class io_thread_t *io_thread_, struct i_inout *inout_);
@@ -54,6 +53,10 @@ namespace zmq
 
     private:
 
+        //  Destructor is not to be used directly.
+        //  Use 'terminate' function instead.
+        ~zmq_engine_t ();
+
         //  Function to handle network disconnections.
         void error ();
 
@@ -72,6 +75,8 @@ namespace zmq
 
         options_t options;
 
+        bool plugged;
+
         zmq_engine_t (const zmq_engine_t&);
         void operator = (const zmq_engine_t&);
     };