--- src/DuelMatch.h.orig	2018-04-08 16:47:48.199405711 +0100
+++ src/DuelMatch.h	2018-04-08 16:48:20.142301292 +0100
@@ -21,6 +21,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <boost/scoped_ptr.hpp>
 #include <boost/shared_ptr.hpp>