diff --git a/rust/db_handling/src/helpers.rs b/rust/db_handling/src/helpers.rs
index da60d42af3..a9a97f98c9 100644
--- a/rust/db_handling/src/helpers.rs
+++ b/rust/db_handling/src/helpers.rs
@@ -225,7 +225,7 @@ pub fn genesis_hash_in_specs(
         }
     }
     specs_set.sort_by(|a, b| a.1.order.cmp(&b.1.order));
-    match specs_set.get(0) {
+    match specs_set.first() {
         Some(a) => Ok(Some(SpecsInvariants {
             base58prefix: a.1.specs.base58prefix,
             first_network_specs_key: a.0.to_owned(),
diff --git a/rust/db_handling/src/interface_signer.rs b/rust/db_handling/src/interface_signer.rs
index c53695d78f..557343ae02 100644
--- a/rust/db_handling/src/interface_signer.rs
+++ b/rust/db_handling/src/interface_signer.rs
@@ -162,7 +162,7 @@ pub fn keys_by_seed_name(database: &sled::Db, seed_name: &str) -> Result<MKeysNe
         .into_iter()
         .partition(|(_, address)| address.is_root());
 
-    let root = root.get(0).map(|root| {
+    let root = root.first().map(|root| {
         let address = Address {
             has_pwd: false,
             path: String::new(),
@@ -291,7 +291,7 @@ pub fn first_network(database: &sled::Db) -> Result<Option<OrderedNetworkSpecs>>
         return Err(Error::NoNetworksAvailable);
     }
     networks.sort_by(|a, b| a.order.cmp(&b.order));
-    Ok(networks.get(0).cloned())
+    Ok(networks.first().cloned())
 }
 
 /// Prepare export key screen struct [`MKeyDetails`].
diff --git a/rust/db_handling/tests/tests.rs b/rust/db_handling/tests/tests.rs
index 1758212b70..aedff7a5bb 100644
--- a/rust/db_handling/tests/tests.rs
+++ b/rust/db_handling/tests/tests.rs
@@ -2114,7 +2114,7 @@ fn test_dynamic_derivations() {
     let derivation = result
         .key_set
         .derivations
-        .get(0)
+        .first()
         .expect("dynamic derivations is missing from result");
     assert_eq!(derivation.path, "//dd");
     assert_eq!(
@@ -2127,7 +2127,7 @@ fn test_dynamic_derivations() {
         DynamicDerivationsAddressResponse::V1(r) => {
             let key_set = r.addr;
             assert_eq!(key_set.dynamic_derivations.len(), 2);
-            let derivation_1 = key_set.dynamic_derivations.get(0).unwrap();
+            let derivation_1 = key_set.dynamic_derivations.first().unwrap();
             assert_eq!(derivation_1.derivation_path, "//dd");
             assert_eq!(
                 derivation_1.public_key,
diff --git a/rust/signer/src/lib.rs b/rust/signer/src/lib.rs
index 1ac2c6b59e..0b2109f1b2 100644
--- a/rust/signer/src/lib.rs
+++ b/rust/signer/src/lib.rs
@@ -116,7 +116,7 @@ impl From<NavigatorError> for ErrorDisplayed {
                     ref errors,
                 } => {
                     if let Some((want, parser::Error::WrongNetworkVersion { in_metadata, .. })) =
-                        errors.get(0)
+                        errors.first()
                     {
                         Self::MetadataOutdated {
                             name: network_name.to_string(),