diff --git a/core/crypto/src/signature.rs b/core/crypto/src/signature.rs
index 5f606d6ce9d..9d6aa6df184 100644
--- a/core/crypto/src/signature.rs
+++ b/core/crypto/src/signature.rs
@@ -13,7 +13,7 @@ use rand_core::OsRng;
 use secp256k1::Message;
 use serde::{Deserialize, Serialize};
 
-pub static SECP256K1: Lazy<secp256k1::Secp256k1> = Lazy::new(|| secp256k1::Secp256k1::new());
+pub static SECP256K1: Lazy<secp256k1::Secp256k1> = Lazy::new(secp256k1::Secp256k1::new);
 
 #[derive(Debug, Copy, Clone, Serialize, Deserialize)]
 pub enum KeyType {
diff --git a/test-utils/runtime-tester/src/scenario_builder.rs b/test-utils/runtime-tester/src/scenario_builder.rs
index 749d3abdc75..be1363aad84 100644
--- a/test-utils/runtime-tester/src/scenario_builder.rs
+++ b/test-utils/runtime-tester/src/scenario_builder.rs
@@ -46,7 +46,7 @@ impl ScenarioBuilder {
     /// Creates builder with an empty scenario with 4 accounts.
     /// Default `use_in_memory_store` -- true.
     pub fn new() -> Self {
-        let network_config = NetworkConfig { seeds: (0..4).map(|x| id_to_seed(x)).collect() };
+        let network_config = NetworkConfig { seeds: (0..4).map(id_to_seed).collect() };
         let runtime_config = RuntimeConfig {
             max_total_prepaid_gas: 300 * 10u64.pow(12),
             gas_limit: 1_000_000_000_000_000,
@@ -68,7 +68,7 @@ impl ScenarioBuilder {
     /// Changes number of accounts to `num_accounts`.
     pub fn number_of_accounts(mut self, num_accounts: usize) -> Self {
         self.scenario.network_config =
-            NetworkConfig { seeds: (0..num_accounts).map(|x| id_to_seed(x)).collect() };
+            NetworkConfig { seeds: (0..num_accounts).map(id_to_seed).collect() };
         self
     }