diff --git a/src/station_base.h b/src/station_base.h
--- a/src/station_base.h
+++ b/src/station_base.h
@@ -110,7 +110,7 @@ public:
 
 	ViewportSign sign;
 
-	uint16 had_vehicle_of_type;
+	byte had_vehicle_of_type;
 
 	byte time_since_load;
 	byte time_since_unload;