diff --git a/identity-api-rs/src/database/types.rs b/identity-api-rs/src/database/list.rs
similarity index 82%
rename from identity-api-rs/src/database/types.rs
rename to identity-api-rs/src/database/list.rs
index dc14bbf..a1e450a 100644
--- a/identity-api-rs/src/database/types.rs
+++ b/identity-api-rs/src/database/list.rs
@@ -1,3 +1,4 @@
+use std::fmt::{Display, Write};
 use diesel::{
     backend::Backend, deserialize::{FromSql, FromSqlRow}, serialize::ToSql, sql_types::Text, sqlite::Sqlite
 };
@@ -6,16 +7,18 @@ use diesel::{
 #[repr(transparent)]
 pub struct List<V: std::fmt::Debug>(pub Vec<V>);
 
-impl ToString for List<String> {
-    fn to_string(&self) -> String {
-        "[".to_owned()
-            + &self
-                .0
-                .iter()
-                .map(|v| "\"".to_owned() + &v.replace("\"", "\\\"") + "\"")
-                .collect::<Vec<String>>()
-                .join(",")
-            + "]"
+impl Display for List<String> {   
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_char('[')?;
+        f.write_str(
+            &self
+            .0
+            .iter()
+            .map(|v| "\"".to_owned() + &v.replace("\"", "\\\"") + "\"")
+            .collect::<Vec<String>>()
+            .join(",")
+        )?;
+        f.write_char(']')
     }
 }
 
diff --git a/identity-api-rs/src/database/mod.rs b/identity-api-rs/src/database/mod.rs
index f689afe..8dd10b0 100644
--- a/identity-api-rs/src/database/mod.rs
+++ b/identity-api-rs/src/database/mod.rs
@@ -20,7 +20,7 @@ use crate::env::database_url;
 
 pub mod models;
 pub mod schema;
-pub mod types;
+pub mod list;
 
 pub fn establish_connection() -> SqliteConnection {
     let url = database_url();
diff --git a/identity-api-rs/src/database/models.rs b/identity-api-rs/src/database/models.rs
index 26249a8..6166ef8 100644
--- a/identity-api-rs/src/database/models.rs
+++ b/identity-api-rs/src/database/models.rs
@@ -18,7 +18,7 @@ use chrono::NaiveDateTime;
 use diesel::prelude::*;
 
 use crate::database::schema;
-use crate::database::types::List;
+use crate::database::list::List;
 
 #[derive(Queryable, Selectable)]
 #[diesel(table_name = schema::date_entries)]
diff --git a/identity-api-rs/src/env.rs b/identity-api-rs/src/env.rs
index 8b0e325..cfeb51b 100644
--- a/identity-api-rs/src/env.rs
+++ b/identity-api-rs/src/env.rs
@@ -18,7 +18,7 @@ use std::env;
 use std::sync::OnceLock;
 use std::time::Duration;
 
-const REQUIRED_ENV_VARIABLES: [&'static str; 4] = [
+const REQUIRED_ENV_VARIABLES: [&str; 4] = [
     "IDENTITY_API_JWT_SECRET",
     "IDENTITY_API_ASSET_API_ENDPOINT",
     "IDENTITY_API_JWT_ALG",
@@ -32,7 +32,7 @@ pub enum LoadEnvError {
 }
 
 pub fn load_env() -> Result<(), LoadEnvError> {
-    dotenvy::dotenv().map_err(|e| LoadEnvError::DotenvyError(e))?;
+    dotenvy::dotenv().map_err(LoadEnvError::DotenvyError)?;
 
     for key in REQUIRED_ENV_VARIABLES {
         if env::var(key).is_err() {