diff --git a/tests/core/logger.cpp b/tests/core/logger.cpp
index 1ccbc31..5a85d45 100644
--- a/tests/core/logger.cpp
+++ b/tests/core/logger.cpp
@@ -24,14 +24,11 @@
 
 #include "core/logger.hpp"
 
-#include <boost/test/unit_test.hpp>
+#include "tests/test-common.hpp"
+
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/classification.hpp>
 
-#include <iostream>
-
-#include "tests/test-common.hpp"
-
 namespace nfd {
 namespace tests {
 
diff --git a/tests/core/resolver.cpp b/tests/core/resolver.cpp
index a8e05ce..18d35b7 100644
--- a/tests/core/resolver.cpp
+++ b/tests/core/resolver.cpp
@@ -24,7 +24,6 @@
 
 #include "core/resolver.hpp"
 #include "core/logger.hpp"
-#include <boost/test/unit_test.hpp>
 
 #include "tests/test-common.hpp"