# Deadline in Ole swap could be sent as a parameter to further prevent MEV Low/Info · Three Sigma · Social money games · 13th June, 2024 Finding 3S-D1-N02 of the DistrictOne security review. - Protocol: https://districtone.io/ - Report: /reports/districtone - Source: https://cdn.sanity.io/files/qoqld077/production/fd2142f1d189dd29db23dff49d4018d4da9c01d6.pdf --- ### Description The deadline parameter to swap Ole is block.timestamp, so there is some room for MEV, although this is technically not possible on Blast as there is not a public mempool. ### Recommendation Send the deadline as a parameter. ### Status Acknowledged --- Related findings: - [Deadline parameter in SyrupUserActions::_swapViaBalancer() could be set to minimize MEV](https://0xsimao.com/findings/maple-finance-syrup-balancer-swap-deadline): Maple Syrup - [Gas forwarded by the CurveGaugeDistributor could be limited to further prevent OOG](https://0xsimao.com/findings/felix-gas-forwarded-curve-limited): Felix Price Feeds - [Swapping with deadline as block.timestamp and 0 minimum amount out is vulnerable to MEV](https://0xsimao.com/findings/clip-finance-i-swapping-deadline-timestamp-mev): Clip Finance Strategies