--- a/src/rail_gui.cpp	Wed Apr 16 22:34:14 2008 +0000
+++ b/src/rail_gui.cpp	Fri Apr 18 19:55:13 2008 +0000
@@ -29,6 +29,7 @@
 #include "settings_type.h"
 #include "widgets/dropdown_type.h"
 #include "widgets/dropdown_func.h"
+#include "tunnelbridge.h"
 
 #include "bridge_map.h"
 #include "rail_map.h"