diff --git a/src/api_data/data_conservation_settings_api.rs b/src/api_data/data_conservation_settings_api.rs
index 3f81b33..5a22c11 100644
--- a/src/api_data/data_conservation_settings_api.rs
+++ b/src/api_data/data_conservation_settings_api.rs
@@ -18,7 +18,7 @@ pub struct DataConservationSettingsAPI {
 impl DataConservationSettingsAPI {
     pub fn new(user: &User) -> Self {
         Self {
-            inactive_account_lifetime: user.delete_account_after.clone(),
+            inactive_account_lifetime: user.delete_account_after,
             notification_lifetime: user.delete_notifications_after,
             comments_lifetime: user.delete_comments_after,
             posts_lifetime: user.delete_posts_after,
diff --git a/src/api_data/entities_constructor.rs b/src/api_data/entities_constructor.rs
index ac92df6..ed99fa9 100644
--- a/src/api_data/entities_constructor.rs
+++ b/src/api_data/entities_constructor.rs
@@ -9,7 +9,7 @@ pub trait EntitiesConstructor {
     fn new(i: &Self::Item) -> Self;
 
     /// Parse a list of it
-    fn for_list(l: &Vec<Self::Item>) -> Vec<Self>
+    fn for_list(l: &[Self::Item]) -> Vec<Self>
         where Self: std::marker::Sized {
         l.iter().map(Self::new).collect()
     }
diff --git a/src/api_data/general_settings_api.rs b/src/api_data/general_settings_api.rs
index d54d60c..b90d2f6 100644
--- a/src/api_data/general_settings_api.rs
+++ b/src/api_data/general_settings_api.rs
@@ -40,9 +40,9 @@ impl GeneralSettingsAPI {
             allow_comunic_mails: user.allow_mails,
             public_friends_list: user.public_friends_list,
             public_email: user.is_email_public,
-            virtual_directory: user.virtual_directory.clone().unwrap_or(String::new()),
-            personnal_website: user.personal_website.clone().unwrap_or(String::new()),
-            publicNote: user.public_note.clone().unwrap_or(String::new()),
+            virtual_directory: user.virtual_directory.clone().unwrap_or_default(),
+            personnal_website: user.personal_website.clone().unwrap_or_default(),
+            publicNote: user.public_note.clone().unwrap_or_default(),
             location: user.location.clone(),
         }
     }
diff --git a/src/api_data/security_settings_api.rs b/src/api_data/security_settings_api.rs
index a571b44..85af34e 100644
--- a/src/api_data/security_settings_api.rs
+++ b/src/api_data/security_settings_api.rs
@@ -20,10 +20,10 @@ impl SecuritySettingsAPI {
     pub fn new(user: &User) -> SecuritySettingsAPI {
         SecuritySettingsAPI {
             id: user.id.id(),
-            security_question_1: user.security_question_1.clone().unwrap_or(String::new()),
-            security_answer_1: user.security_answer_1.clone().unwrap_or(String::new()),
-            security_question_2: user.security_question_2.clone().unwrap_or(String::new()),
-            security_answer_2: user.security_answer_2.clone().unwrap_or(String::new()),
+            security_question_1: user.security_question_1.clone().unwrap_or_default(),
+            security_answer_1: user.security_answer_1.clone().unwrap_or_default(),
+            security_question_2: user.security_question_2.clone().unwrap_or_default(),
+            security_answer_2: user.security_answer_2.clone().unwrap_or_default(),
         }
     }
 }
\ No newline at end of file
diff --git a/src/api_data/user_like_api.rs b/src/api_data/user_like_api.rs
index 4786a05..9a9cb1c 100644
--- a/src/api_data/user_like_api.rs
+++ b/src/api_data/user_like_api.rs
@@ -27,7 +27,7 @@ impl UserLikeAPI {
         }
     }
 
-    pub fn for_list(l: &Vec<UserLike>) -> Vec<Self> {
+    pub fn for_list(l: &[UserLike]) -> Vec<Self> {
         l.iter().map(Self::new).collect()
     }
 }
\ No newline at end of file
diff --git a/src/utils/date_utils.rs b/src/utils/date_utils.rs
index e5f2e5c..c567127 100644
--- a/src/utils/date_utils.rs
+++ b/src/utils/date_utils.rs
@@ -28,7 +28,7 @@ pub fn time() -> u64 {
 pub fn time_to_mysql_date(time: u64) -> String {
     let utc = Utc.timestamp(time as i64, 0);
     let str = utc.to_rfc3339();
-    (&str[..19]).replace("T", " ")
+    (&str[..19]).replace('T', " ")
 }
 
 /// Get current Mysql formatted date
diff --git a/src/utils/user_data_utils.rs b/src/utils/user_data_utils.rs
index 2e69501..56bf4dc 100644
--- a/src/utils/user_data_utils.rs
+++ b/src/utils/user_data_utils.rs
@@ -48,7 +48,7 @@ pub fn prepare_file_creation(user_id: &UserID, folder: &str) -> ResultBoxError<P
 
 /// Generate a new file name to store user data
 pub fn generate_new_user_data_file_name(dir: &Path, ext: &str) -> ResultBoxError<PathBuf> {
-    let sys_dir = user_data_path(&dir);
+    let sys_dir = user_data_path(dir);
 
     if !sys_dir.exists() {
         return Err(ExecError::boxed_string(format!("Directory {:?} does not exists!", dir)));