diff --git a/src/saveload/afterload.cpp b/src/saveload/afterload.cpp
index 6302eb7fb1..cd1e9b8608 100644
--- a/src/saveload/afterload.cpp
+++ b/src/saveload/afterload.cpp
@@ -3895,6 +3895,14 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (SlXvIsFeatureMissing(XSLFI_CUSTOM_TOWN_ZONE)) {
+		_settings_game.economy.city_zone_0_mult = _settings_game.economy.town_zone_0_mult;
+		_settings_game.economy.city_zone_1_mult = _settings_game.economy.town_zone_1_mult;
+		_settings_game.economy.city_zone_2_mult = _settings_game.economy.town_zone_2_mult;
+		_settings_game.economy.city_zone_3_mult = _settings_game.economy.town_zone_3_mult;
+		_settings_game.economy.city_zone_4_mult = _settings_game.economy.town_zone_4_mult;
+	}
+
 	InitializeRoadGUI();
 
 	/* This needs to be done after conversion. */
diff --git a/src/saveload/extended_ver_sl.cpp b/src/saveload/extended_ver_sl.cpp
index 4ad0f28799..d047a31e90 100644
--- a/src/saveload/extended_ver_sl.cpp
+++ b/src/saveload/extended_ver_sl.cpp
@@ -148,6 +148,7 @@ const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
 	{ XSLFI_INFLATION_FIXED_DATES,  XSCF_IGNORABLE_ALL,       1,   1, "inflation_fixed_dates",     nullptr, nullptr, nullptr        },
 	{ XSLFI_WATER_FLOODING,         XSCF_NULL,                1,   1, "water_flooding",            nullptr, nullptr, nullptr        },
 	{ XSLFI_MORE_HOUSES,            XSCF_NULL,                1,   1, "more_houses",               nullptr, nullptr, nullptr        },
+	{ XSLFI_CUSTOM_TOWN_ZONE,       XSCF_IGNORABLE_UNKNOWN,   1,   1, "custom_town_zone",          nullptr, nullptr, nullptr        },
 	{ XSLFI_NULL, XSCF_NULL, 0, 0, nullptr, nullptr, nullptr, nullptr },// This is the end marker
 };
 
diff --git a/src/saveload/extended_ver_sl.h b/src/saveload/extended_ver_sl.h
index 8e7ec2e39c..f8ce522883 100644
--- a/src/saveload/extended_ver_sl.h
+++ b/src/saveload/extended_ver_sl.h
@@ -102,6 +102,7 @@ enum SlXvFeatureIndex {
 	XSLFI_INFLATION_FIXED_DATES,                  ///< Inflation is applied between fixed dates
 	XSLFI_WATER_FLOODING,                         ///< Water flooding map bit
 	XSLFI_MORE_HOUSES,                            ///< More house types
+	XSLFI_CUSTOM_TOWN_ZONE,                       ///< Custom town zones
 
 	XSLFI_RIFF_HEADER_60_BIT,                     ///< Size field in RIFF chunk header is 60 bit
 	XSLFI_HEIGHT_8_BIT,                           ///< Map tile height is 8 bit instead of 4 bit, but savegame version may be before this became true in trunk