diff --git a/model/fw/smart-flooding.h b/model/fw/smart-flooding.h
index f66d1e8..e1637aa 100644
--- a/model/fw/smart-flooding.h
+++ b/model/fw/smart-flooding.h
@@ -55,7 +55,7 @@
   // inherited
   virtual bool
   DoPropagateInterest (Ptr<Face> inFace,
-                       Ptr<const InterestHeader> header,
+                       Ptr<const Interest> header,
                        Ptr<const Packet> origPacket,
                        Ptr<pit::Entry> pitEntry);