# genesisLimit can be placed as constant variables to save gas. Low/Info · Three Sigma · Omnichain RWA tokenisation · 27th January, 2024 Finding 3S-MetaZero-N05 of the MetaZero Omnichain NFTs security review. - Protocol: https://metazero.gg/ - Report: /reports/metazero-i - Source: https://cdn.sanity.io/files/qoqld077/production/1b1ab4ff365756fe1d86767f1e06744407570f5a.pdf --- ### Description Constant variables are cheaper as no storage writes are required, so genesisLimit should define the constant keyword. ### Status Addressed in a79fbc8. --- Related findings: - [Storage variables should be cached whenever possible to save gas](https://0xsimao.com/findings/glacier-storage-cached-whenever-gas): Glacier - [Variables should be cached to memory to save gas](https://0xsimao.com/findings/metazero-ii-variables-cached-memory-gas): MetaZero Staking - [Storage variables can be cached to save gas](https://0xsimao.com/findings/mitosis-storage-variables-cached-gas): Mitosis - [Storage variables can be cached to save gas](https://0xsimao.com/findings/orange-storage-variables-cached-gas): Orange Bridge