diff --git a/src/gamemode_tutorial.h b/src/gamemode_tutorial.h
index e86b4e0bd2ebe..7356e38d577c5 100644
--- a/src/gamemode_tutorial.h
+++ b/src/gamemode_tutorial.h
@@ -5,6 +5,8 @@
 #include "gamemode.h"
 #include "enum_conversions.h"
 
+#include <map>
+
 enum special_game_id : int;
 enum action_id : int;