diff --git a/src/table/settings/locale_settings.ini b/src/table/settings/locale_settings.ini
--- a/src/table/settings/locale_settings.ini
+++ b/src/table/settings/locale_settings.ini
@@ -10,8 +10,10 @@
 [pre-amble]
 uint8 _old_units;                                      ///< Old units from old savegames
 
-static std::initializer_list<const char*> _locale_currencies{"GBP", "USD", "EUR", "YEN", "ATS", "BEF", "CHF", "CZK", "DEM", "DKK", "ESP", "FIM", "FRF", "GRD", "HUF", "ISK", "ITL", "NLG", "NOK", "PLN", "RON", "RUR", "SIT", "SEK", "YTL", "SKK", "BRL", "EEK", "custom"};
-static std::initializer_list<const char*> _locale_units{"imperial", "metric", "si", "gameunits"};
+static constexpr std::initializer_list<const char*> _locale_currencies{"GBP", "USD", "EUR", "JPY", "ATS", "BEF", "CHF", "CZK", "DEM", "DKK", "ESP", "FIM", "FRF", "GRD", "HUF", "ISK", "ITL", "NLG", "NOK", "PLN", "RON", "RUR", "SIT", "SEK", "TRY", "SKK", "BRL", "EEK", "LTL", "KRW", "ZAR", "custom", "GEL", "IRR", "RUB", "MXN", "NTD", "CNY", "HKD", "INR", "IDR", "MYR"};
+static constexpr std::initializer_list<const char*> _locale_units{"imperial", "metric", "si", "gameunits"};
+
+static_assert(_locale_currencies.size() == CURRENCY_END);
 
 static const SettingVariant _locale_settings_table[] = {
 [post-amble]