diff --git a/src/openrct2/world/Map.cpp b/src/openrct2/world/Map.cpp
index 7ba555425d..fa68151575 100644
--- a/src/openrct2/world/Map.cpp
+++ b/src/openrct2/world/Map.cpp
@@ -18,6 +18,7 @@
 #include "../Cheats.h"
 #include "../config/Config.h"
 #include "../Context.h"
+#include "../core/Guard.hpp"
 #include "../core/Math.hpp"
 #include "../core/Util.hpp"
 #include "../Game.h"