diff --git a/tests/unit/packet-base.t.cpp b/tests/unit/detail/packet-base.t.cpp
similarity index 94%
rename from tests/unit/packet-base.t.cpp
rename to tests/unit/detail/packet-base.t.cpp
index d541512..41d47db 100644
--- a/tests/unit/packet-base.t.cpp
+++ b/tests/unit/detail/packet-base.t.cpp
@@ -19,7 +19,7 @@
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
  */
 
-#include "ndn-cxx/packet-base.hpp"
+#include "ndn-cxx/detail/packet-base.hpp"
 #include "ndn-cxx/interest.hpp"
 #include "ndn-cxx/lp/tags.hpp"
 
@@ -28,6 +28,7 @@
 namespace ndn {
 namespace tests {
 
+BOOST_AUTO_TEST_SUITE(Detail)
 BOOST_AUTO_TEST_SUITE(TestPacketBase)
 
 BOOST_AUTO_TEST_CASE(CongestionMark)
@@ -59,6 +60,7 @@
 }
 
 BOOST_AUTO_TEST_SUITE_END() // TestPacketBase
+BOOST_AUTO_TEST_SUITE_END() // Detail
 
 } // namespace tests
 } // namespace ndn
diff --git a/tests/unit/tag-host.t.cpp b/tests/unit/detail/tag-host.t.cpp
similarity index 95%
rename from tests/unit/tag-host.t.cpp
rename to tests/unit/detail/tag-host.t.cpp
index b9192ed..72caa7e 100644
--- a/tests/unit/tag-host.t.cpp
+++ b/tests/unit/detail/tag-host.t.cpp
@@ -19,7 +19,7 @@
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
  */
 
-#include "ndn-cxx/tag-host.hpp"
+#include "ndn-cxx/detail/tag-host.hpp"
 #include "ndn-cxx/data.hpp"
 #include "ndn-cxx/interest.hpp"
 
@@ -30,6 +30,7 @@
 namespace ndn {
 namespace tests {
 
+BOOST_AUTO_TEST_SUITE(Detail)
 BOOST_AUTO_TEST_SUITE(TestTagHost)
 
 class TestTag : public Tag
@@ -81,6 +82,7 @@
 }
 
 BOOST_AUTO_TEST_SUITE_END() // TestTagHost
+BOOST_AUTO_TEST_SUITE_END() // Detail
 
 } // namespace tests
 } // namespace ndn