diff --git a/model/pit/ndn-pit-entry.h b/model/pit/ndn-pit-entry.h
index 1dc4264..ecec2a6 100644
--- a/model/pit/ndn-pit-entry.h
+++ b/model/pit/ndn-pit-entry.h
@@ -272,6 +272,12 @@
   inline void
   RemoveFwTag ();
 
+  /**
+   * @brief Get InterestHeader (if several interests are received, then nonce is from the first Interest)
+   */
+  Ptr<const InterestHeader>
+  GetInterest () const;
+
 private:
   friend std::ostream& operator<< (std::ostream& os, const Entry &entry);