diff --git a/src/roadveh_cmd.cpp b/src/roadveh_cmd.cpp
--- a/src/roadveh_cmd.cpp
+++ b/src/roadveh_cmd.cpp
@@ -19,7 +19,7 @@
 #include "pathfinder/yapf/yapf.h"
 #include "strings_func.h"
 #include "tunnelbridge_map.h"
-#include "date_func.h"
+#include "timer/timer_game_calendar.h"
 #include "vehicle_func.h"
 #include "sound_func.h"
 #include "ai/ai.hpp"
@@ -298,8 +298,8 @@ CommandCost CmdBuildRoadVehicle(DoComman
 
 		v->SetServiceInterval(Company::Get(v->owner)->settings.vehicle.servint_roadveh);
 
-		v->date_of_last_service = _date;
-		v->build_year = _cur_year;
+		v->date_of_last_service = TimerGameCalendar::date;
+		v->build_year = TimerGameCalendar::year;
 
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
 		v->random_bits = VehicleRandomBits();