diff --git a/src/test/common/test_hostname.cc b/src/test/common/test_hostname.cc
index 8c498bd05b3..54f5e3e2334 100644
--- a/src/test/common/test_hostname.cc
+++ b/src/test/common/test_hostname.cc
@@ -22,7 +22,7 @@
 
 #include "unistd.h"
 
-#include <string>
+#include <array>
 #include <iostream>
 #include <stdexcept>
 #include <stdio.h>