diff --git a/src/genworld.cpp b/src/genworld.cpp
index c5d5f10df8..db145a5153 100644
--- a/src/genworld.cpp
+++ b/src/genworld.cpp
@@ -198,7 +198,7 @@ static void _GenerateWorld()
 		Debug(desync, 1, "new_map: {:08x}", _settings_game.game_creation.generation_seed);
 
 		if (_debug_desync_level > 0) {
-			std::string name = fmt::format("dmp_cmds_{:08x}_{:08x}.sav", _settings_game.game_creation.generation_seed, TimerGameCalendar::date);
+			std::string name = fmt::format("dmp_cmds_{:08x}_{:08x}.sav", _settings_game.game_creation.generation_seed, TimerGameEconomy::date);
 			SaveOrLoad(name, SLO_SAVE, DFT_GAME_FILE, AUTOSAVE_DIR, false);
 		}
 	} catch (AbortGenerateWorldSignal&) {
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 04388b181d..c5375bba4b 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -1465,7 +1465,7 @@ void StateGameLoop()
 	} else {
 		if (_debug_desync_level > 2 && TimerGameEconomy::date_fract == 0 && (TimerGameEconomy::date.base() & 0x1F) == 0) {
 			/* Save the desync savegame if needed. */
-			std::string name = fmt::format("dmp_cmds_{:08x}_{:08x}.sav", _settings_game.game_creation.generation_seed, TimerGameCalendar::date);
+			std::string name = fmt::format("dmp_cmds_{:08x}_{:08x}.sav", _settings_game.game_creation.generation_seed, TimerGameEconomy::date);
 			SaveOrLoad(name, SLO_SAVE, DFT_GAME_FILE, AUTOSAVE_DIR, false);
 		}