diff --git a/crates/cli/src/handler/enclave_start.rs b/crates/cli/src/handler/enclave_start.rs
index 130a2caa..3a1e365c 100644
--- a/crates/cli/src/handler/enclave_start.rs
+++ b/crates/cli/src/handler/enclave_start.rs
@@ -221,7 +221,7 @@ async fn gramine_manifest(
         .arg("-Dra_type=dcap")
         .arg(format!("-Dra_client_spid={}", ra_client_spid))
         .arg("-Dra_client_linkable=1")
-        .arg(format!("-Dchain_id={}", chain_id.to_string()))
+        .arg(format!("-Dchain_id={}", chain_id))
         .arg(format!("-Dquartz_dir={}", quartz_dir.display()))
         .arg(format!("-Dtrusted_height={}", trusted_height))
         .arg(format!("-Dtrusted_hash={}", trusted_hash))
diff --git a/crates/utils/cw-client/src/grpc.rs b/crates/utils/cw-client/src/grpc.rs
index 2c2d6b2b..be93edec 100644
--- a/crates/utils/cw-client/src/grpc.rs
+++ b/crates/utils/cw-client/src/grpc.rs
@@ -129,7 +129,7 @@ impl CwClient for GrpcClient {
             msgs,
             account.sequence,
             account.account_number,
-            &chain_id,
+            chain_id,
         )
         .map_err(|e| anyhow!("failed to create msg/tx: {}", e))?;
 
@@ -194,10 +194,10 @@ pub fn tx_bytes(
     chain_id: &TmChainId,
 ) -> Result<Vec<u8>, Box<dyn Error>> {
     let tx_body = tx::Body::new(msgs, "", 0u16);
-    let signer_info = SignerInfo::single_direct(Some(tm_pubkey.into()), sequence_number);
+    let signer_info = SignerInfo::single_direct(Some(tm_pubkey), sequence_number);
     let auth_info = signer_info.auth_info(Fee::from_amount_and_gas(amount, gas));
     let sign_doc = SignDoc::new(&tx_body, &auth_info, chain_id, account_number)?;
-    let tx_signed = sign_doc.sign(&secret)?;
+    let tx_signed = sign_doc.sign(secret)?;
     Ok(tx_signed.to_bytes()?)
 }
 
diff --git a/examples/transfers/enclave/src/wslistener.rs b/examples/transfers/enclave/src/wslistener.rs
index ec1e7dda..78d097ee 100644
--- a/examples/transfers/enclave/src/wslistener.rs
+++ b/examples/transfers/enclave/src/wslistener.rs
@@ -160,7 +160,7 @@ fn extract_event_info(
     Ok((contract_address, ephemeral_pubkey, sender))
 }
 
-async fn transfer_handler<A: Attestor>(
+async fn transfer_handler<A>(
     client: &TransfersService<A>,
     contract: &AccountId,
     ws_config: &WsListenerConfig,