diff --git a/src/rust/cryptography-x509-verification/src/policy/extension.rs b/src/rust/cryptography-x509-verification/src/policy/extension.rs
index 80221a4c0ff8..fa034ac10d00 100644
--- a/src/rust/cryptography-x509-verification/src/policy/extension.rs
+++ b/src/rust/cryptography-x509-verification/src/policy/extension.rs
@@ -592,7 +592,7 @@ mod tests {
         critical: bool,
         ext: &T,
     ) -> Vec<u8> {
-        let ext_value = asn1::write_single(&ext).unwrap();
+        let ext_value = asn1::write_single(ext).unwrap();
         let ext = Extension {
             extn_id: oid,
             critical,
diff --git a/src/rust/cryptography-x509-verification/src/policy/mod.rs b/src/rust/cryptography-x509-verification/src/policy/mod.rs
index 8c2216b71fe4..935113fcdf3c 100644
--- a/src/rust/cryptography-x509-verification/src/policy/mod.rs
+++ b/src/rust/cryptography-x509-verification/src/policy/mod.rs
@@ -680,7 +680,7 @@ mod tests {
             assert!(WEBPKI_PERMITTED_SIGNATURE_ALGORITHMS.contains(&RSASSA_PSS_SHA256.deref()));
             let exp_encoding = b"0A\x06\t*\x86H\x86\xf7\r\x01\x01\n04\xa0\x0f0\r\x06\t`\x86H\x01e\x03\x04\x02\x01\x05\x00\xa1\x1c0\x1a\x06\t*\x86H\x86\xf7\r\x01\x01\x080\r\x06\t`\x86H\x01e\x03\x04\x02\x01\x05\x00\xa2\x03\x02\x01 ";
             assert_eq!(
-                asn1::write_single(&RSASSA_PSS_SHA256.deref()).unwrap(),
+                asn1::write_single(RSASSA_PSS_SHA256.deref()).unwrap(),
                 exp_encoding
             );
         }
@@ -689,7 +689,7 @@ mod tests {
             assert!(WEBPKI_PERMITTED_SIGNATURE_ALGORITHMS.contains(&RSASSA_PSS_SHA384.deref()));
             let exp_encoding = b"0A\x06\t*\x86H\x86\xf7\r\x01\x01\n04\xa0\x0f0\r\x06\t`\x86H\x01e\x03\x04\x02\x02\x05\x00\xa1\x1c0\x1a\x06\t*\x86H\x86\xf7\r\x01\x01\x080\r\x06\t`\x86H\x01e\x03\x04\x02\x02\x05\x00\xa2\x03\x02\x010";
             assert_eq!(
-                asn1::write_single(&RSASSA_PSS_SHA384.deref()).unwrap(),
+                asn1::write_single(RSASSA_PSS_SHA384.deref()).unwrap(),
                 exp_encoding
             );
         }
@@ -698,7 +698,7 @@ mod tests {
             assert!(WEBPKI_PERMITTED_SIGNATURE_ALGORITHMS.contains(&RSASSA_PSS_SHA512.deref()));
             let exp_encoding = b"0A\x06\t*\x86H\x86\xf7\r\x01\x01\n04\xa0\x0f0\r\x06\t`\x86H\x01e\x03\x04\x02\x03\x05\x00\xa1\x1c0\x1a\x06\t*\x86H\x86\xf7\r\x01\x01\x080\r\x06\t`\x86H\x01e\x03\x04\x02\x03\x05\x00\xa2\x03\x02\x01@";
             assert_eq!(
-                asn1::write_single(&RSASSA_PSS_SHA512.deref()).unwrap(),
+                asn1::write_single(RSASSA_PSS_SHA512.deref()).unwrap(),
                 exp_encoding
             );
         }
diff --git a/src/rust/src/pkcs7.rs b/src/rust/src/pkcs7.rs
index d1c1c6f15003..f6d8a5cfcd6a 100644
--- a/src/rust/src/pkcs7.rs
+++ b/src/rust/src/pkcs7.rs
@@ -190,9 +190,9 @@ fn sign_and_serialize<'p>(
         // Subset of values OpenSSL provides:
         // https://github.com/openssl/openssl/blob/667a8501f0b6e5705fd611d5bb3ca24848b07154/crypto/pkcs7/pk7_smime.c#L150
         // removing all the ones that are bad cryptography
-        &asn1::SequenceOfWriter::new([oid::AES_256_CBC_OID]),
-        &asn1::SequenceOfWriter::new([oid::AES_192_CBC_OID]),
-        &asn1::SequenceOfWriter::new([oid::AES_128_CBC_OID]),
+        asn1::SequenceOfWriter::new([oid::AES_256_CBC_OID]),
+        asn1::SequenceOfWriter::new([oid::AES_192_CBC_OID]),
+        asn1::SequenceOfWriter::new([oid::AES_128_CBC_OID]),
     ]))?;
 
     #[allow(clippy::type_complexity)]
diff --git a/src/rust/src/x509/certificate.rs b/src/rust/src/x509/certificate.rs
index 2fbf280eaf7b..5c18c2246db9 100644
--- a/src/rust/src/x509/certificate.rs
+++ b/src/rust/src/x509/certificate.rs
@@ -93,7 +93,7 @@ impl Certificate {
         py: pyo3::Python<'p>,
         algorithm: &pyo3::Bound<'p, pyo3::PyAny>,
     ) -> CryptographyResult<pyo3::Bound<'p, pyo3::types::PyBytes>> {
-        let serialized = asn1::write_single(&self.raw.borrow_dependent())?;
+        let serialized = asn1::write_single(self.raw.borrow_dependent())?;
 
         let mut h = hashes::Hash::new(py, algorithm, None)?;
         h.update_bytes(&serialized)?;
diff --git a/src/rust/src/x509/crl.rs b/src/rust/src/x509/crl.rs
index 4d4ca9540f4d..027c178efe42 100644
--- a/src/rust/src/x509/crl.rs
+++ b/src/rust/src/x509/crl.rs
@@ -93,7 +93,7 @@ pub(crate) struct CertificateRevocationList {
 
 impl CertificateRevocationList {
     fn public_bytes_der(&self) -> CryptographyResult<Vec<u8>> {
-        Ok(asn1::write_single(&self.owned.borrow_dependent())?)
+        Ok(asn1::write_single(self.owned.borrow_dependent())?)
     }
 
     fn revoked_cert(&self, py: pyo3::Python<'_>, idx: usize) -> RevokedCertificate {
@@ -239,7 +239,7 @@ impl CertificateRevocationList {
         py: pyo3::Python<'p>,
         encoding: pyo3::Bound<'p, pyo3::PyAny>,
     ) -> CryptographyResult<pyo3::Bound<'p, pyo3::types::PyBytes>> {
-        let result = asn1::write_single(&self.owned.borrow_dependent())?;
+        let result = asn1::write_single(self.owned.borrow_dependent())?;
 
         encode_der_data(py, "X509 CRL".to_string(), result, &encoding)
     }