diff --git a/daemon/table/network-region-table.hpp b/daemon/table/network-region-table.hpp
index e531a45..96acf87 100644
--- a/daemon/table/network-region-table.hpp
+++ b/daemon/table/network-region-table.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2021,  Regents of the University of California,
+ * Copyright (c) 2014-2022,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -28,8 +28,6 @@
 
 #include "core/common.hpp"
 
-#include <ndn-cxx/delegation-list.hpp>
-
 namespace nfd {
 
 /** \brief stores a collection of producer region names
@@ -48,11 +46,11 @@
    *  \retval false the Interest has not reached a producer region
    *
    *  If any delegation name in the forwarding hint is a prefix of any region name,
-   *  the Interest has reached the producer region and should be forwarded according to ‎its Name;
+   *  the Interest has reached the producer region and should be forwarded according to its Name;
    *  otherwise, the Interest should be forwarded according to the forwarding hint.
    */
   bool
-  isInProducerRegion(const ndn::DelegationList& forwardingHint) const;
+  isInProducerRegion(span<const Name> forwardingHint) const;
 };
 
 } // namespace nfd