diff --git a/tests/unit-tests/protocol-detail.t.cpp b/tests/unit-tests/protocol-detail.t.cpp
index 38084a2..a10b54b 100644
--- a/tests/unit-tests/protocol-detail.t.cpp
+++ b/tests/unit-tests/protocol-detail.t.cpp
@@ -72,6 +72,6 @@
 
 BOOST_AUTO_TEST_SUITE_END() // TestProtocolDetail
 
-}  // namespace tests
-}  // namespace ndncert
-}  // namespace ndn
+} // namespace tests
+} // namespace ndncert
+} // namespace ndn