diff --git a/src/genworld.cpp b/src/genworld.cpp
--- a/src/genworld.cpp
+++ b/src/genworld.cpp
@@ -17,6 +17,7 @@
 #include "heightmap.h"
 #include "viewport_func.h"
 #include "date_func.h"
+#include "timer/timer_game_calendar.h"
 #include "engine_func.h"
 #include "water.h"
 #include "video/video_driver.hpp"
@@ -193,7 +194,7 @@ static void _GenerateWorld()
 
 		if (_debug_desync_level > 0) {
 			char name[MAX_PATH];
-			seprintf(name, lastof(name), "dmp_cmds_%08x_%08x.sav", _settings_game.game_creation.generation_seed, _date);
+			seprintf(name, lastof(name), "dmp_cmds_%08x_%08x.sav", _settings_game.game_creation.generation_seed, TimerGameCalendar::date);
 			SaveOrLoad(name, SLO_SAVE, DFT_GAME_FILE, AUTOSAVE_DIR, false);
 		}
 	} catch (AbortGenerateWorldSignal&) {