diff --git a/src/resolve_errors.hpp b/src/resolve_errors.hpp
index c58dc7d..979261a 100644
--- a/src/resolve_errors.hpp
+++ b/src/resolve_errors.hpp
@@ -1,6 +1,8 @@
 #pragma once
 #include "callback.hpp"
 
+#include <string>
+
 namespace phosphor
 {
 namespace dbus