diff --git a/model/ccnx-flooding-strategy.h b/model/ccnx-flooding-strategy.h
index 750f21c..fa77988 100644
--- a/model/ccnx-flooding-strategy.h
+++ b/model/ccnx-flooding-strategy.h
@@ -47,7 +47,7 @@
 
   // inherited from  CcnxForwardingStrategy
   virtual bool
-  PropagateInterest (const CcnxPitEntry  &pitEntry, 
+  PropagateInterest (Ptr<CcnxPitEntry> pitEntry, 
                      const Ptr<CcnxFace> &incomingFace,
                      Ptr<CcnxInterestHeader> &header,
                      const Ptr<const Packet> &packet);