diff --git a/tests/util/test_list.cpp b/tests/util/test_list.cpp
index fb671f8..cf72a3f 100644
--- a/tests/util/test_list.cpp
+++ b/tests/util/test_list.cpp
@@ -13,8 +13,9 @@
  ******************************************************************************
 */
 
-#define BOOST_TEST_MODULE list
+#include <string.h>
 
+#define BOOST_TEST_MODULE list
 #include <boost/test/unit_test.hpp>
 
 #include "util/list.h"