diff --git a/src/saveload/misc_sl.cpp b/src/saveload/misc_sl.cpp
--- a/src/saveload/misc_sl.cpp
+++ b/src/saveload/misc_sl.cpp
@@ -13,6 +13,7 @@
 #include "compat/misc_sl_compat.h"
 
 #include "../timer/timer_game_calendar.h"
+#include "../timer/timer_game_economy.h"
 #include "../zoom_func.h"
 #include "../window_gui.h"
 #include "../window_func.h"
@@ -85,6 +86,8 @@ static const SaveLoad _date_desc[] = {
 	    SLEG_VAR("date_fract",             TimerGameCalendar::date_fract,             SLE_UINT16),
 	SLEG_CONDVAR("tick_counter",           TimerGameTick::counter,           SLE_FILE_U16 | SLE_VAR_U64,  SL_MIN_VERSION, SLV_U64_TICK_COUNTER),
 	SLEG_CONDVAR("tick_counter",           TimerGameTick::counter,           SLE_UINT64,                  SLV_U64_TICK_COUNTER, SL_MAX_VERSION),
+	SLEG_CONDVAR("economy_date",           TimerGameEconomy::date,           SLE_INT32,                   SLV_ECONOMY_DATE, SL_MAX_VERSION),
+	SLEG_CONDVAR("economy_date_fract",     TimerGameEconomy::date_fract,     SLE_UINT16,                  SLV_ECONOMY_DATE, SL_MAX_VERSION),
 	SLEG_CONDVAR("age_cargo_skip_counter", _age_cargo_skip_counter, SLE_UINT8,                   SL_MIN_VERSION, SLV_162),
 	SLEG_CONDVAR("cur_tileloop_tile",      _cur_tileloop_tile,      SLE_FILE_U16 | SLE_VAR_U32,  SL_MIN_VERSION, SLV_6),
 	SLEG_CONDVAR("cur_tileloop_tile",      _cur_tileloop_tile,      SLE_UINT32,                  SLV_6, SL_MAX_VERSION),