diff --git a/tests/test-nlsr.cpp b/tests/test-nlsr.cpp
index 6c46205..dc91c73 100644
--- a/tests/test-nlsr.cpp
+++ b/tests/test-nlsr.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2020,  The University of Memphis,
+ * Copyright (c) 2014-2021,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -29,8 +29,6 @@
 namespace nlsr {
 namespace test {
 
-using namespace ndn::time_literals;
-
 class NlsrFixture : public MockNfdMgmtFixture
 {
 public: