diff --git a/src/timesheet.rs b/src/timesheet.rs
index 6232018..b4f013e 100644
--- a/src/timesheet.rs
+++ b/src/timesheet.rs
@@ -2,11 +2,12 @@ use super::tracc::ListView;
 use itertools::Itertools;
 use serde::{Deserialize, Serialize};
 use serde_json::from_reader;
+use std::collections;
 use std::default;
 use std::fmt;
-use std::fs::File;
-use std::io::BufReader;
-use time::OffsetDateTime;
+use std::fs;
+use std::io;
+use time::{Duration, OffsetDateTime};
 
 pub struct TimeSheet {
     pub times: Vec<TimePoint>,
@@ -50,16 +51,16 @@ impl default::Default for TimePoint {
 }
 
 fn read_times(path: &str) -> Option<Vec<TimePoint>> {
-    File::open(path)
+    fs::File::open(path)
         .ok()
-        .map(|f| BufReader::new(f))
+        .map(io::BufReader::new)
         .and_then(|r| from_reader(r).ok())
 }
 
 impl TimeSheet {
     pub fn open_or_create(path: &str) -> Self {
         Self {
-            times: read_times(path).unwrap_or(vec![TimePoint::new("Did something")]),
+            times: read_times(path).unwrap_or_else(|| vec![TimePoint::new("Did something")]),
             selected: 0,
             register: None,
             editing_time: false,
@@ -79,13 +80,10 @@ impl TimeSheet {
             .iter()
             .tuple_windows()
             .map(|(prev, next)| (prev.text.clone(), next.time - prev.time))
-            .fold(
-                std::collections::BTreeMap::new(),
-                |mut map, (text, duration)| {
-                    *map.entry(text).or_insert(time::Duration::zero()) += duration;
-                    map
-                },
-            )
+            .fold(collections::BTreeMap::new(), |mut map, (text, duration)| {
+                *map.entry(text).or_insert_with(Duration::zero) += duration;
+                map
+            })
             .into_iter()
             .map(|(text, duration)| format!("{}: {}", text, format_duration(&duration)))
             .join(" | ")
@@ -97,14 +95,14 @@ impl TimeSheet {
             .iter()
             .map(|tp| tp.time)
             .tuple_windows()
-            .fold(time::Duration::zero(), |total, (last, next)| {
+            .fold(Duration::zero(), |total, (last, next)| {
                 total + (next - last)
             });
         format_duration(&total)
     }
 }
 
-fn format_duration(d: &time::Duration) -> String {
+fn format_duration(d: &Duration) -> String {
     format!("{}:{:02}", d.whole_hours(), d.whole_minutes().max(1) % 60)
 }
 
diff --git a/src/todolist.rs b/src/todolist.rs
index 866f4e8..d7a57f9 100644
--- a/src/todolist.rs
+++ b/src/todolist.rs
@@ -2,8 +2,8 @@ use crate::tracc::ListView;
 use serde::{Deserialize, Serialize};
 use serde_json::from_reader;
 use std::fmt;
-use std::fs::File;
-use std::io::BufReader;
+use std::fs;
+use std::io;
 
 pub struct TodoList {
     pub todos: Vec<Todo>,
@@ -13,7 +13,6 @@ pub struct TodoList {
 
 #[derive(Serialize, Deserialize, Default, Clone)]
 pub struct Todo {
-    // We use owned strings here because they’re easier to manipulate when editing.
     text: String,
     done: bool,
 }
@@ -34,16 +33,16 @@ impl fmt::Display for Todo {
 }
 
 fn read_todos(path: &str) -> Option<Vec<Todo>> {
-    File::open(path)
+    fs::File::open(path)
         .ok()
-        .map(|f| BufReader::new(f))
+        .map(io::BufReader::new)
         .and_then(|r| from_reader(r).ok())
 }
 
 impl TodoList {
     pub fn open_or_create(path: &str) -> Self {
         Self {
-            todos: read_todos(path).unwrap_or(vec![Todo::new("This is a list entry")]),
+            todos: read_todos(path).unwrap_or_else(|| vec![Todo::new("This is a list entry")]),
             selected: 0,
             register: None,
         }
diff --git a/src/tracc.rs b/src/tracc.rs
index 336d413..6aa7b34 100644
--- a/src/tracc.rs
+++ b/src/tracc.rs
@@ -99,7 +99,7 @@ impl Tracc {
             Mode::Normal => {
                 self.todos.normal_mode();
                 self.times.normal_mode();
-                self.terminal.hide_cursor()?
+                self.terminal.hide_cursor()?;
             }
         };
         self.input_mode = mode;
@@ -119,7 +119,7 @@ impl Tracc {
                         .borders(Borders::TOP | Borders::RIGHT | Borders::LEFT),
                 )
                 .items(content)
-                .select(selected.into())
+                .select(selected)
                 .highlight_style(Style::default().fg(Color::LightGreen))
                 .highlight_symbol(">")
         }
@@ -150,7 +150,7 @@ impl Tracc {
             Paragraph::new(
                 [
                     Text::raw(format!("Sum for today: {}\n", total_time)),
-                    Text::raw(times)
+                    Text::raw(times),
                 ]
                 .iter(),
             )
@@ -223,10 +223,8 @@ pub trait ListView<T: fmt::Display + Clone> {
     }
 
     fn paste(&mut self) {
-        let register = self.register().clone();
-        match register {
-            Some(item) => self.insert(item, None),
-            None => (),
+        if let Some(item) = self.register().clone() {
+            self.insert(item, None);
         }
     }