diff --git a/day_04/src/crossword.rs b/day_04/src/crossword.rs
index 06e3dc1..d752158 100644
--- a/day_04/src/crossword.rs
+++ b/day_04/src/crossword.rs
@@ -2,7 +2,6 @@ use std::error::Error;
 use std::fmt::Display;
 use std::fs::File;
 use std::io::{BufReader, prelude::*};
-use std::num;
 
 #[derive(Debug)]
 pub struct Crossword {