diff --git a/explorer/src/service/util.rs b/explorer/src/service/util.rs
index a239bbb..f515ad6 100644
--- a/explorer/src/service/util.rs
+++ b/explorer/src/service/util.rs
@@ -10,7 +10,7 @@ use {
 #[allow(unused)]
 #[inline(always)]
 pub fn public_key_to_base64(key: &XfrPublicKey) -> String {
-    engine::general_purpose::URL_SAFE.encode(&ZeiFromToBytes::zei_to_bytes(key))
+    engine::general_purpose::URL_SAFE.encode(ZeiFromToBytes::zei_to_bytes(key))
 }
 
 #[allow(unused)]
diff --git a/module/src/utils/crypto.rs b/module/src/utils/crypto.rs
index ade772b..04ba477 100644
--- a/module/src/utils/crypto.rs
+++ b/module/src/utils/crypto.rs
@@ -1,6 +1,5 @@
 use bech32::ToBase32;
-use ethereum::LegacyTransaction;
-use ethereum::LegacyTransactionMessage;
+use ethereum::{LegacyTransaction, LegacyTransactionMessage};
 use ethereum_types::{H160, H256};
 use ruc::eg;
 use sha3::{Digest, Keccak256};