diff --git a/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs b/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs
index 97c21a1..30fae48 100644
--- a/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs
+++ b/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs
@@ -9,7 +9,6 @@ use core::{
     str::FromStr,
 };
 use curve25519_dalek::scalar::Scalar;
-//use hmac::{Mac, NewMac};
 use hmac::Mac;
 use subtle::{Choice, ConstantTimeEq};
 use zeroize::Zeroize;