--- a/crates/evm-coder/tests/a.rs
+++ b/crates/evm-coder/tests/a.rs
@@ -2,6 +2,7 @@
 
 use evm_coder::{solidity_interface, types::*, ToLog, execution::Result};
 use evm_coder_macros::solidity;
+use std as sp_std;
 
 struct Impls;