diff --git a/crates/e2e/src/client.rs b/crates/e2e/src/client.rs
index e57fff48b6f..2d770af3dcc 100644
--- a/crates/e2e/src/client.rs
+++ b/crates/e2e/src/client.rs
@@ -31,6 +31,7 @@ use ink_env::Environment;
 use ink_primitives::MessageResult;
 use pallet_contracts_primitives::ExecReturnValue;
 use sp_core::Pair;
+#[cfg(feature = "std")]
 use std::{
     collections::BTreeMap,
     fmt::Debug,