diff --git a/src/lib.rs b/src/lib.rs
index 3d91820..6226f80 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,22 +21,20 @@ pub fn process_file(
     File::open(path)?.read_to_end(&mut buffer)?;
     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 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;
-                    let msg = report::Message {
-                        path,
-                        line,
-                        line_num,
-                        col_num,
-                        word,
-                        correction,
-                        non_exhaustive: (),
-                    };
-                    report(msg);
-                }
+        for symbol in tokens::Symbol::parse(line) {
+            // Correct tokens as-is
+            if let Some(correction) = dictionary.correct_str(symbol.token) {
+                let col_num = symbol.offset;
+                let msg = report::Message {
+                    path,
+                    line,
+                    line_num,
+                    col_num,
+                    word: symbol.token,
+                    correction,
+                    non_exhaustive: (),
+                };
+                report(msg);
             }
         }
     }
diff --git a/src/tokens.rs b/src/tokens.rs
index e3621f0..dedff69 100644
--- a/src/tokens.rs
+++ b/src/tokens.rs
@@ -1,11 +1,11 @@
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Symbol<'t> {
-    pub token: &'t [u8],
+    pub token: &'t str,
     pub offset: usize,
 }
 
 impl<'t> Symbol<'t> {
-    pub fn new(token: &'t [u8], offset: usize) -> Self {
+    pub fn new(token: &'t str, offset: usize) -> Self {
         Self { token, offset }
     }
 
@@ -15,9 +15,10 @@ impl<'t> Symbol<'t> {
             #[allow(clippy::invalid_regex)]
             static ref SPLIT: regex::bytes::Regex = regex::bytes::Regex::new(r#"\b(\p{Alphabetic}|\d|_)+\b"#).unwrap();
         }
-        SPLIT
-            .find_iter(content)
-            .map(|m| Symbol::new(m.as_bytes(), m.start()))
+        SPLIT.find_iter(content).filter_map(|m| {
+            let s = std::str::from_utf8(m.as_bytes()).ok();
+            s.map(|s| Symbol::new(s, m.start()))
+        })
     }
 }
 
@@ -36,7 +37,7 @@ mod test {
     #[test]
     fn tokenize_word_is_word() {
         let input = b"word";
-        let expected: Vec<Symbol> = vec![Symbol::new(b"word", 0)];
+        let expected: Vec<Symbol> = vec![Symbol::new("word", 0)];
         let actual: Vec<_> = Symbol::parse(input).collect();
         assert_eq!(expected, actual);
     }
@@ -44,7 +45,7 @@ mod test {
     #[test]
     fn tokenize_space_separated_words() {
         let input = b"A B";
-        let expected: Vec<Symbol> = vec![Symbol::new(b"A", 0), Symbol::new(b"B", 2)];
+        let expected: Vec<Symbol> = vec![Symbol::new("A", 0), Symbol::new("B", 2)];
         let actual: Vec<_> = Symbol::parse(input).collect();
         assert_eq!(expected, actual);
     }
@@ -52,7 +53,7 @@ mod test {
     #[test]
     fn tokenize_dot_separated_words() {
         let input = b"A.B";
-        let expected: Vec<Symbol> = vec![Symbol::new(b"A", 0), Symbol::new(b"B", 2)];
+        let expected: Vec<Symbol> = vec![Symbol::new("A", 0), Symbol::new("B", 2)];
         let actual: Vec<_> = Symbol::parse(input).collect();
         assert_eq!(expected, actual);
     }
@@ -60,7 +61,7 @@ mod test {
     #[test]
     fn tokenize_namespace_separated_words() {
         let input = b"A::B";
-        let expected: Vec<Symbol> = vec![Symbol::new(b"A", 0), Symbol::new(b"B", 3)];
+        let expected: Vec<Symbol> = vec![Symbol::new("A", 0), Symbol::new("B", 3)];
         let actual: Vec<_> = Symbol::parse(input).collect();
         assert_eq!(expected, actual);
     }
@@ -68,7 +69,7 @@ mod test {
     #[test]
     fn tokenize_underscore_doesnt_separate() {
         let input = b"A_B";
-        let expected: Vec<Symbol> = vec![Symbol::new(b"A_B", 0)];
+        let expected: Vec<Symbol> = vec![Symbol::new("A_B", 0)];
         let actual: Vec<_> = Symbol::parse(input).collect();
         assert_eq!(expected, actual);
     }