diff --git a/model/forwarding-strategy/smart-flooding.h b/model/forwarding-strategy/smart-flooding.h
index 840ce6a..c939015 100644
--- a/model/forwarding-strategy/smart-flooding.h
+++ b/model/forwarding-strategy/smart-flooding.h
@@ -42,10 +42,10 @@
 
   // inherited
   virtual bool
-  DoPropagateInterest (const Ptr<CcnxFace> &incomingFace,
-                       Ptr<CcnxInterestHeader> header,
+  DoPropagateInterest (const Ptr<NdnFace> &incomingFace,
+                       Ptr<NdnInterestHeader> header,
                        const Ptr<const Packet> &packet,
-                       Ptr<CcnxPitEntry> pitEntry);
+                       Ptr<NdnPitEntry> pitEntry);
 
 private:
   typedef GreenYellowRed super;