diff --git a/unit_tests/storage/tar.cpp b/unit_tests/storage/tar.cpp
index bcb4602e9..c15a1ea4f 100644
--- a/unit_tests/storage/tar.cpp
+++ b/unit_tests/storage/tar.cpp
@@ -4,6 +4,7 @@
 #include "../common/temporary_file.hpp"
 
 #include <boost/iterator/function_input_iterator.hpp>
+#include <boost/iterator/function_output_iterator.hpp>
 #include <boost/test/unit_test.hpp>
 
 BOOST_AUTO_TEST_SUITE(tar)