diff --git a/src/dict.rs b/src/dict.rs
index fbc7df9..d587525 100644
--- a/src/dict.rs
+++ b/src/dict.rs
@@ -1,5 +1,6 @@
 include!(concat!(env!("OUT_DIR"), "/codegen.rs"));
 
+#[derive(Default)]
 pub struct Dictionary {}
 
 impl Dictionary {
@@ -29,6 +30,6 @@ fn map_lookup(
     // See https://github.com/rust-lang/rust/issues/28853#issuecomment-158735548
     unsafe {
         let key = ::std::mem::transmute::<_, &'static str>(key);
-        map.get(&UniCase(key)).map(|s| *s)
+        map.get(&UniCase(key)).cloned()
     }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 86156a9..d707770 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,7 +21,7 @@ pub fn process_file(
     for (line_idx, line) in grep_searcher::LineIter::new(b'\n', &buffer).enumerate() {
         let line_num = line_idx + 1;
         for token in tokens::Symbol::parse(line) {
-            if let Some(word) = std::str::from_utf8(token.token).ok() {
+            if let Ok(word) = std::str::from_utf8(token.token) {
                 // Correct tokens as-is
                 if let Some(correction) = dictionary.correct_str(word) {
                     let col_num = token.offset;
diff --git a/src/main.rs b/src/main.rs
index 6a652e9..386bacf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -51,10 +51,8 @@ struct Options {
 
 impl Options {
     pub fn infer(mut self) -> Self {
-        if self.path.len() == 1 {
-            if self.path[0].is_file() {
-                self.threads = 1;
-            }
+        if self.path.len() == 1 && self.path[0].is_file() {
+            self.threads = 1;
         }
 
         self
diff --git a/src/tokens.rs b/src/tokens.rs
index f3ca3a1..70948da 100644
--- a/src/tokens.rs
+++ b/src/tokens.rs
@@ -9,7 +9,7 @@ impl<'t> Symbol<'t> {
         Self { token, offset }
     }
 
-    pub fn parse<'s>(content: &'s [u8]) -> impl Iterator<Item = Symbol<'s>> {
+    pub fn parse(content: &[u8]) -> impl Iterator<Item = Symbol<'_>> {
         lazy_static::lazy_static! {
             static ref SPLIT: regex::bytes::Regex = regex::bytes::Regex::new(r#"\b(\p{Alphabetic}|\d|_)+\b"#).unwrap();
         }