diff --git a/src/newgrf.cpp b/src/newgrf.cpp
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -1506,7 +1506,7 @@ static ChangeInfoResult TownHouseChangeI
 				 * climate. This can cause problems when copying the properties
 				 * of a house that accepts food, where the new house is valid
 				 * in the temperate climate. */
-				if (!GetCargo(housespec->accepts_cargo[2])->IsValid()) {
+				if (!CargoSpec::Get(housespec->accepts_cargo[2])->IsValid()) {
 					housespec->cargo_acceptance[2] = 0;
 				}
 
@@ -1552,7 +1552,7 @@ static ChangeInfoResult TownHouseChangeI
 						((_settings_game.game_creation.landscape == LT_TOYLAND) ? CT_FIZZY_DRINKS : CT_FOOD);
 
 				/* Make sure the cargo type is valid in this climate. */
-				if (!GetCargo(cid)->IsValid()) goods = 0;
+				if (!CargoSpec::Get(cid)->IsValid()) goods = 0;
 
 				housespec->accepts_cargo[2] = cid;
 				housespec->cargo_acceptance[2] = abs(goods); // but we do need positive value here
@@ -1897,7 +1897,7 @@ static ChangeInfoResult CargoChangeInfo(
 	}
 
 	for (int i = 0; i < numinfo; i++) {
-		CargoSpec *cs = &_cargo[cid + i];
+		CargoSpec *cs = CargoSpec::Get(cid + i);
 
 		switch (prop) {
 			case 0x08: // Bit number of cargo
@@ -2995,7 +2995,7 @@ static CargoID TranslateCargo(uint8 feat
 		}
 
 		for (CargoID c = 0; c < NUM_CARGO; c++) {
-			const CargoSpec *cs = GetCargo(c);
+			const CargoSpec *cs = CargoSpec::Get(c);
 			if (!cs->IsValid()) continue;
 
 			if (cs->bitnum == ctype) {
@@ -3290,7 +3290,7 @@ static void CargoMapSpriteGroup(byte *bu
 			continue;
 		}
 
-		CargoSpec *cs = &_cargo[cid];
+		CargoSpec *cs = CargoSpec::Get(cid);
 		cs->grffile = _cur_grffile;
 		cs->group = _cur_grffile->spritegroups[groupid];
 	}
@@ -5587,7 +5587,7 @@ static void BuildCargoTranslationMap()
 	memset(_cur_grffile->cargo_map, 0xFF, sizeof(_cur_grffile->cargo_map));
 
 	for (CargoID c = 0; c < NUM_CARGO; c++) {
-		const CargoSpec *cs = GetCargo(c);
+		const CargoSpec *cs = CargoSpec::Get(c);
 		if (!cs->IsValid()) continue;
 
 		if (_cur_grffile->cargo_max == 0) {
@@ -5699,7 +5699,7 @@ static void CalculateRefitMasks()
 			} else {
 				/* No cargo table, so use the cargo bitnum values */
 				for (CargoID c = 0; c < NUM_CARGO; c++) {
-					const CargoSpec *cs = GetCargo(c);
+					const CargoSpec *cs = CargoSpec::Get(c);
 					if (!cs->IsValid()) continue;
 
 					if (HasBit(ei->refit_mask, cs->bitnum)) SetBit(xor_mask, c);
@@ -5710,7 +5710,7 @@ static void CalculateRefitMasks()
 		if (_gted[engine].cargo_allowed != 0) {
 			/* Build up the list of cargo types from the set cargo classes. */
 			for (CargoID i = 0; i < NUM_CARGO; i++) {
-				const CargoSpec *cs = GetCargo(i);
+				const CargoSpec *cs = CargoSpec::Get(i);
 				if (_gted[engine].cargo_allowed    & cs->classes) SetBit(mask,     i);
 				if (_gted[engine].cargo_disallowed & cs->classes) SetBit(not_mask, i);
 			}