diff --git a/src/lexer.rs b/src/lexer.rs
index 9ab735f..43b9672 100644
--- a/src/lexer.rs
+++ b/src/lexer.rs
@@ -108,7 +108,7 @@ pub struct TokenInfo<'a> {
 
 impl<'a> Display for TokenInfo<'a> {
     fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
-        write!(f, "{:04}| {}\n    |", self.line_num, self.line)?;
+        write!(f, "{:>4}| {}\n    |", self.line_num, self.line)?;
 
         write!(f, "{} ^", " ".repeat(self.token_start))?;