diff --git a/sip/MetaInterface.sip b/sip/MetaInterface.sip
index 0a26231..b9add86 100644
--- a/sip/MetaInterface.sip
+++ b/sip/MetaInterface.sip
@@ -22,5 +22,7 @@ namespace Meta
     virtual void 	getStatus(StatusType& status /Out/);
     virtual int 	getNbHwAcquiredFrames();
 
+  private:
+    Interface(const Meta::Interface);
   };
 };