diff --git a/source/ps/scripting/JSInterface_Mod.h b/source/ps/scripting/JSInterface_Mod.h
index f364bb66dc..96bf8bf2ef 100644
--- a/source/ps/scripting/JSInterface_Mod.h
+++ b/source/ps/scripting/JSInterface_Mod.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2017 Wildfire Games.
+/* Copyright (C) 2018 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -18,6 +18,7 @@
 #ifndef INCLUDED_JSI_MOD
 #define INCLUDED_JSI_MOD
 
+#include "ps/CStr.h"
 #include "scriptinterface/ScriptInterface.h"
 
 class ScriptInterface;