diff --git a/tests/route/test-hyperbolic-calculator.cpp b/tests/route/test-hyperbolic-calculator.cpp
index f830c94..18a7d21 100644
--- a/tests/route/test-hyperbolic-calculator.cpp
+++ b/tests/route/test-hyperbolic-calculator.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  The University of Memphis,
+ * Copyright (c) 2014-2023,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -35,7 +35,8 @@
 
 using std::shared_ptr;
 using ndn::time::system_clock;
-static const system_clock::TimePoint MAX_TIME = system_clock::TimePoint::max();
+
+constexpr system_clock::time_point MAX_TIME = system_clock::time_point::max();
 
 class HyperbolicCalculatorFixture : public IoKeyChainFixture
 {
diff --git a/tests/route/test-link-state-calculator.cpp b/tests/route/test-link-state-calculator.cpp
index 46c27fe..397f779 100644
--- a/tests/route/test-link-state-calculator.cpp
+++ b/tests/route/test-link-state-calculator.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  The University of Memphis,
+ * Copyright (c) 2014-2023,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -34,8 +34,7 @@
 namespace nlsr {
 namespace test {
 
-static const ndn::time::system_clock::TimePoint MAX_TIME =
-  ndn::time::system_clock::TimePoint::max();
+constexpr ndn::time::system_clock::time_point MAX_TIME = ndn::time::system_clock::time_point::max();
 
 class LinkStateCalculatorFixture : public IoKeyChainFixture
 {
diff --git a/tests/route/test-name-prefix-table.cpp b/tests/route/test-name-prefix-table.cpp
index 9c9833f..1425603 100644
--- a/tests/route/test-name-prefix-table.cpp
+++ b/tests/route/test-name-prefix-table.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  The University of Memphis,
+ * Copyright (c) 2014-2023,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -315,7 +315,7 @@
 
 BOOST_FIXTURE_TEST_CASE(UpdateFromLsdb, NamePrefixTableFixture)
 {
-  ndn::time::system_clock::TimePoint testTimePoint =  ndn::time::system_clock::now();
+  auto testTimePoint = ndn::time::system_clock::now();
   NamePrefixList npl1;
   ndn::Name n1("name1");
   ndn::Name n2("name2");
diff --git a/tests/route/test-routing-table.cpp b/tests/route/test-routing-table.cpp
index 6bbe475..1e689a7 100644
--- a/tests/route/test-routing-table.cpp
+++ b/tests/route/test-routing-table.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  The University of Memphis,
+ * Copyright (c) 2014-2023,  The University of Memphis,
  *                           Regents of the University of California
  *
  * This file is part of NLSR (Named-data Link State Routing).
@@ -118,7 +118,7 @@
 
 BOOST_FIXTURE_TEST_CASE(UpdateFromLsdb, RoutingTableFixture)
 {
-  ndn::time::system_clock::TimePoint testTimePoint = ndn::time::system_clock::now() + 3600_s;
+  auto testTimePoint = ndn::time::system_clock::now() + 3600_s;
   ndn::Name router2("/router2");
   AdjLsa adjLsa(router2, 12, testTimePoint, 2, conf.getAdjacencyList());
   std::shared_ptr<Lsa> lsaPtr = std::make_shared<AdjLsa>(adjLsa);