diff --git a/src/saveload/town_sl.cpp b/src/saveload/town_sl.cpp
--- a/src/saveload/town_sl.cpp
+++ b/src/saveload/town_sl.cpp
@@ -192,7 +192,8 @@ static const SaveLoad _town_desc[] = {
 
 	SLE_CONDLST(Town, psa_list,            REF_STORAGE,                161, SL_MAX_VERSION),
 
-	SLE_CONDVAR(Town, cargo_produced,       SLE_UINT32,                166, SL_MAX_VERSION),
+	SLE_CONDVAR(Town, cargo_produced,        SLE_FILE_U32 | SLE_VAR_U64, 166, 198),
+	SLE_CONDVAR(Town, cargo_produced,        SLE_UINT64,                 199, SL_MAX_VERSION),
 
 	/* reserve extra space in savegame here. (currently 30 bytes) */
 	SLE_CONDNULL(30, 2, SL_MAX_VERSION),
@@ -274,12 +275,13 @@ static void Save_TOWN()
 static void Load_TOWN()
 {
 	int index;
+	uint num_cargo = IsSavegameVersionBefore(199) ? 32 : NUM_CARGO;
 
 	while ((index = SlIterateArray()) != -1) {
 		Town *t = new (index) Town();
 		SlObject(t, _town_desc);
 
-		for (CargoID i = 0; i < NUM_CARGO; i++) {
+		for (CargoID i = 0; i < num_cargo; i++) {
 			SlObject(&t->supplied[i], _town_supplied_desc);
 		}
 		for (int i = TE_BEGIN; i < TE_END; i++) {