diff --git a/core/src/identity/ecdsa.rs b/core/src/identity/ecdsa.rs
index b883243b13b..81dfec4b4e0 100644
--- a/core/src/identity/ecdsa.rs
+++ b/core/src/identity/ecdsa.rs
@@ -157,7 +157,7 @@ impl PublicKey {
         let buf = Self::del_asn1_header(k).ok_or_else(|| {
             DecodingError::new("failed to parse asn.1 encoded ecdsa p256 public key")
         })?;
-        Self::from_bytes(&buf)
+        Self::from_bytes(buf)
     }
 
     // ecPublicKey (ANSI X9.62 public key type) OID: 1.2.840.10045.2.1
@@ -198,8 +198,8 @@ impl PublicKey {
         if asn1_head[0] != 0x30
             || asn1_head[2] != 0x30
             || asn1_head[3] as usize != oids_len
-            || &oids_buf[..Self::EC_PUBLIC_KEY_OID.len()] != &Self::EC_PUBLIC_KEY_OID
-            || &oids_buf[Self::EC_PUBLIC_KEY_OID.len()..] != &Self::SECP_256_R1_OID
+            || oids_buf[..Self::EC_PUBLIC_KEY_OID.len()] != Self::EC_PUBLIC_KEY_OID
+            || oids_buf[Self::EC_PUBLIC_KEY_OID.len()..] != Self::SECP_256_R1_OID
             || bitstr_head[0] != 0x03
             || bitstr_head[2] != 0x00
         {