diff --git a/src/crypt.rs b/src/crypt.rs
index 1d40ae7..bf42c58 100644
--- a/src/crypt.rs
+++ b/src/crypt.rs
@@ -165,7 +165,7 @@ pub fn encrypt_value(value: &str, master_key: [u8; 32]) -> EncryptedValue {
     hmac.input(&output[..]);
     EncryptedValue {
         ciphertext: output,
-        iv: iv,
+        iv,
         mac: hmac.result(),
     }
 }
diff --git a/src/db.rs b/src/db.rs
index 73bd05c..73d6dc6 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -7,7 +7,7 @@ use std::error::Error;
 use std::fmt;
 use std::path::PathBuf;
 
-static DB_INIT_QUERY: &'static str = include_str!("init.sql");
+static DB_INIT_QUERY: &str = include_str!("init.sql");
 
 pub struct DbHandle {
     conn: Connection,
@@ -50,13 +50,13 @@ impl DbHandle {
     pub fn new(db_path: &Option<String>) -> DbHandle {
         let path: PathBuf = db_path
             .as_ref()
-            .map(|path: &String| PathBuf::from(path))
+            .map(PathBuf::from)
             .unwrap_or_else(|| dirs::home_dir().unwrap().join(".foil").to_path_buf());
         let mut conn: Connection = Connection::open(path).unwrap();
         let tx = conn.transaction().unwrap();
         tx.execute_batch(DB_INIT_QUERY).unwrap();
         tx.commit().unwrap();
-        DbHandle { conn: conn }
+        DbHandle { conn }
     }
 
     pub fn get_namespace_id(
@@ -93,7 +93,7 @@ impl DbHandle {
         )
         .unwrap();
         let rowid: i64 = tx.last_insert_rowid();
-        let _ = tx.commit().unwrap();
+        tx.commit().unwrap();
         Ok(rowid)
     }
 
@@ -125,7 +125,7 @@ impl DbHandle {
         )
         .unwrap();
 
-        let _ = tx.commit().unwrap();
+        tx.commit().unwrap();
     }
 
     pub fn read_notes(&mut self, master_key: [u8; 32]) -> rusqlite::Result<Vec<Note>> {
@@ -215,7 +215,7 @@ impl DbHandle {
             .map(|option| option.map(|prop| prop.from_base64().unwrap()))
     }
 
-    pub fn set_db_property_bytes(&self, name: &str, value: &Vec<u8>) {
+    pub fn set_db_property_bytes(&self, name: &str, value: &[u8]) {
         let b64value: String = value.to_base64(base64::STANDARD);
         self.set_db_property(name, &b64value);
     }
diff --git a/src/generate.rs b/src/generate.rs
index 2c27c11..4b2110d 100644
--- a/src/generate.rs
+++ b/src/generate.rs
@@ -5,7 +5,7 @@ use std::iter::FromIterator;
 
 pub fn generate(spec: &str) {
     let (len, rest) = {
-        let mut separated = spec.splitn(2, ",");
+        let mut separated = spec.splitn(2, ',');
         let len = separated.next().unwrap();
         let rest = separated.next().unwrap();
         (len, rest)
diff --git a/src/main.rs b/src/main.rs
index 57f0306..ce2e924 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,7 +16,7 @@ pub mod crypt;
 pub mod db;
 pub mod generate;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 foil
 
 Usage: