diff --git a/src/intro_gui.cpp b/src/intro_gui.cpp
--- a/src/intro_gui.cpp
+++ b/src/intro_gui.cpp
@@ -9,17 +9,16 @@
 #include "textbuf_gui.h"
 #include "network/network.h"
 #include "variables.h"
-#include "heightmap.h"
 #include "genworld.h"
 #include "network/network_gui.h"
 #include "network/network_content.h"
-#include "newgrf.h"
+#include "landscape_type.h"
 #include "strings_func.h"
 #include "window_func.h"
 #include "fios.h"
-#include "gfx_func.h"
 #include "settings_type.h"
 #include "functions.h"
+#include "newgrf_config.h"
 #include "ai/ai_gui.hpp"
 
 #include "table/strings.h"