diff --git a/daemon/table/pit.cpp b/daemon/table/pit.cpp
index cc447f2..4ebdefb 100644
--- a/daemon/table/pit.cpp
+++ b/daemon/table/pit.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2019,  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,
@@ -25,8 +25,7 @@
 
 #include "pit.hpp"
 
-namespace nfd {
-namespace pit {
+namespace nfd::pit {
 
 static inline bool
 nteHasPitEntries(const name_tree::Entry& nte)
@@ -128,5 +127,4 @@
   return const_iterator(m_nameTree.fullEnumerate(&nteHasPitEntries).begin());
 }
 
-} // namespace pit
-} // namespace nfd
+} // namespace nfd::pit