Fixing Coding Style
diff --git a/nsync/src/sync-interest-table.h b/nsync/src/sync-interest-table.h
index 9b7c46b..4810c41 100644
--- a/nsync/src/sync-interest-table.h
+++ b/nsync/src/sync-interest-table.h
@@ -42,7 +42,7 @@
 class SyncInterestTable
 {
 public:
-  SyncInterestTable (boost::asio::io_service& io, ndn::time::Duration lifetime);
+  SyncInterestTable (boost::asio::io_service& io, ndn::time::system_clock::Duration lifetime);
   ~SyncInterestTable ();
 
   /**
@@ -81,7 +81,7 @@
   expireInterests ();
 
 private:
-  ndn::time::Duration m_entryLifetime;
+  ndn::time::system_clock::Duration m_entryLifetime;
   InterestContainer m_table;
 
   ndn::Scheduler m_scheduler;