diff --git a/ndn-cpp/forwarding-entry.cpp b/ndn-cpp/forwarding-entry.cpp
index 0e8c6d7..116a542 100644
--- a/ndn-cpp/forwarding-entry.cpp
+++ b/ndn-cpp/forwarding-entry.cpp
@@ -10,7 +10,7 @@
 
 namespace ndn {
   
-void ForwardingEntry::set(const struct ndn_ForwardingEntry &forwardingEntryStruct) 
+void ForwardingEntry::set(const struct ndn_ForwardingEntry& forwardingEntryStruct) 
 {
   if (forwardingEntryStruct.action && forwardingEntryStruct.actionLength > 0)
     action_ = string(forwardingEntryStruct.action, forwardingEntryStruct.action + forwardingEntryStruct.actionLength);
@@ -24,7 +24,7 @@
   freshnessSeconds_ = forwardingEntryStruct.freshnessSeconds;
 }
 
-void ForwardingEntry::get(struct ndn_ForwardingEntry &forwardingEntryStruct) const 
+void ForwardingEntry::get(struct ndn_ForwardingEntry& forwardingEntryStruct) const 
 {
   prefix_.get(forwardingEntryStruct.prefix);
   publisherPublicKeyDigest_.get(forwardingEntryStruct.publisherPublicKeyDigest);