    function l2TransactionBaseCost(
        uint256 _gasPrice,
-       uint256 _l2GasLimit,
-       uint256 _l2GasPerPubdataByteLimit
+       uint256 _l2GasLimit
    ) public pure returns (uint256) {
-         uint256 l2GasPrice = _deriveL2GasPrice(_gasPrice, _l2GasPerPubdataByteLimit);
+         uint256 l2GasPrice = _deriveL2GasPrice(_gasPrice, REQUIRED_L2_GAS_PRICE_PER_PUBDATA);
          return l2GasPrice * _l2GasLimit;
    }
