diff --git a/common/nymcoconut/src/scheme/mod.rs b/common/nymcoconut/src/scheme/mod.rs
index 3185233543..50c7301409 100644
--- a/common/nymcoconut/src/scheme/mod.rs
+++ b/common/nymcoconut/src/scheme/mod.rs
@@ -240,7 +240,7 @@ mod tests {
     #[test]
     fn unblind_returns_error_if_integrity_check_on_commitment_hash_fails() {
         let mut params = Parameters::new(2).unwrap();
-        let private_attributes = params.n_random_scalars(2 as usize);
+        let private_attributes = params.n_random_scalars(2_usize);
         let elgamal_keypair = elgamal::elgamal_keygen(&mut params);
 
         let lambda =
diff --git a/common/nymcoconut/src/tests/e2e.rs b/common/nymcoconut/src/tests/e2e.rs
index a302985fa2..2964100485 100644
--- a/common/nymcoconut/src/tests/e2e.rs
+++ b/common/nymcoconut/src/tests/e2e.rs
@@ -41,7 +41,7 @@ fn main() -> Result<(), CoconutError> {
         let blinded_signature = blind_sign(
             &params,
             &keypair.secret_key(),
-            &elgamal_keypair.public_key(),
+            elgamal_keypair.public_key(),
             &blind_sign_request,
             &public_attributes,
         )?;
@@ -57,8 +57,8 @@ fn main() -> Result<(), CoconutError> {
             signature
                 .unblind(
                     &params,
-                    &elgamal_keypair.private_key(),
-                    &verification_key,
+                    elgamal_keypair.private_key(),
+                    verification_key,
                     &private_attributes,
                     &public_attributes,
                     &blind_sign_request.get_commitment_hash(),
diff --git a/common/nymsphinx/chunking/src/fragment.rs b/common/nymsphinx/chunking/src/fragment.rs
index 69a5042af6..58c1baa78a 100644
--- a/common/nymsphinx/chunking/src/fragment.rs
+++ b/common/nymsphinx/chunking/src/fragment.rs
@@ -923,7 +923,7 @@ mod fragment_header {
 
             let header_bytes = fragmented_header.to_bytes();
             let header_bytes = &header_bytes[..header_bytes.len() - 1];
-            assert!(FragmentHeader::try_from_bytes(&header_bytes).is_err())
+            assert!(FragmentHeader::try_from_bytes(header_bytes).is_err())
         }
 
         #[test]
diff --git a/common/nymsphinx/chunking/src/reconstruction.rs b/common/nymsphinx/chunking/src/reconstruction.rs
index 9901cfa055..ecd7c6fb85 100644
--- a/common/nymsphinx/chunking/src/reconstruction.rs
+++ b/common/nymsphinx/chunking/src/reconstruction.rs
@@ -446,7 +446,7 @@ mod reconstruction_buffer {
                 .collect();
 
         for raw_fragment in raw_fragments.iter().take(u8::max_value() as usize - 1) {
-            buf.insert_fragment(Fragment::try_from_bytes(&raw_fragment).unwrap());
+            buf.insert_fragment(Fragment::try_from_bytes(raw_fragment).unwrap());
         }
 
         assert!(!buf.is_complete);
@@ -1268,7 +1268,7 @@ mod message_reconstructor {
                 .collect();
 
         for raw_fragment in raw_fragments.iter().take(u8::max_value() as usize) {
-            set_buf1.insert_fragment(Fragment::try_from_bytes(&raw_fragment).unwrap());
+            set_buf1.insert_fragment(Fragment::try_from_bytes(raw_fragment).unwrap());
         }
 
         set_buf2.insert_fragment(Fragment::try_from_bytes(&raw_fragments[255]).unwrap());
diff --git a/common/nymsphinx/cover/src/lib.rs b/common/nymsphinx/cover/src/lib.rs
index 6b78559ac3..3a545dbaa0 100644
--- a/common/nymsphinx/cover/src/lib.rs
+++ b/common/nymsphinx/cover/src/lib.rs
@@ -162,7 +162,7 @@ mod tests {
 
     #[test]
     fn is_cover_works_for_identical_input() {
-        assert!(is_cover(&LOOP_COVER_MESSAGE_PAYLOAD))
+        assert!(is_cover(LOOP_COVER_MESSAGE_PAYLOAD))
     }
 
     #[test]