diff --git a/model/pit/ccnx-pit-entry.h b/model/pit/ccnx-pit-entry.h
index 37de28e..4cbae2e 100644
--- a/model/pit/ccnx-pit-entry.h
+++ b/model/pit/ccnx-pit-entry.h
@@ -205,8 +205,10 @@
   /**
    * @brief Flag outgoing face as hopeless
    */
+  // virtual void
+  // SetWaitingInVain (out_iterator face);
   virtual void
-  SetWaitingInVain (out_iterator face);
+  SetWaitingInVain (Ptr<CcnxFace> face);
   
   /**
    * @brief Check if all outgoing faces are NACKed