diff --git a/validator_manager/src/validators/create_validators.rs b/validator_manager/src/validators/create_validators.rs
index 54320961fd..166c815ecd 100644
--- a/validator_manager/src/validators/create_validators.rs
+++ b/validator_manager/src/validators/create_validators.rs
@@ -301,14 +301,14 @@ async fn build_validator_spec_from_cli<'a>(
      */
 
     let mut validators = Vec::with_capacity(count as usize);
-    let mut deposits = disable_deposits.then(|| vec![]);
+    let mut deposits = disable_deposits.then(Vec::new);
 
     for (i, derivation_index) in (first_index..first_index + count).enumerate() {
         // If the voting keystore password was not provided by the user then use a unique random
         // string for each validator.
         let voting_keystore_password = voting_keystore_password
             .clone()
-            .unwrap_or_else(|| random_password_string());
+            .unwrap_or_else(random_password_string);
 
         // Set the wallet to the appropriate derivation index.
         wallet
@@ -372,7 +372,7 @@ async fn build_validator_spec_from_cli<'a>(
             let withdrawal_credentials = if let Some(eth1_withdrawal_address) =
                 eth1_withdrawal_address
             {
-                WithdrawalCredentials::eth1(eth1_withdrawal_address, &spec)
+                WithdrawalCredentials::eth1(eth1_withdrawal_address, spec)
             } else {
                 // Decrypt the withdrawal keystore so withdrawal credentials can be created. It's
                 // not strictly necessary to decrypt the keystore since we can read the pubkey
@@ -382,7 +382,7 @@ async fn build_validator_spec_from_cli<'a>(
                     .withdrawal
                     .decrypt_keypair(withdrawal_keystore_password.as_ref())
                     .map_err(|e| format!("Failed to decrypt withdrawal keystore {}: {:?}", i, e))?;
-                WithdrawalCredentials::bls(&withdrawal_keypair.pk, &spec)
+                WithdrawalCredentials::bls(&withdrawal_keypair.pk, spec)
             };
 
             // Create a JSON structure equivalent to the one generated by
@@ -391,7 +391,7 @@ async fn build_validator_spec_from_cli<'a>(
                 &voting_keypair,
                 withdrawal_credentials.into(),
                 deposit_gwei,
-                &spec,
+                spec,
             )?;
 
             deposits.push(json_deposit);