diff --git a/2021/src/day4.rs b/2021/src/day4.rs
index 6f0d8cb..795d5f1 100644
--- a/2021/src/day4.rs
+++ b/2021/src/day4.rs
@@ -156,6 +156,7 @@ impl MarkerBoard {
 
     fn is_bingo(&self) -> bool {
         let h = 0b11111;
+        #[allow(clippy::unusual_byte_groupings)]
         let v = 0b00001_00001_00001_00001_00001;
         let m = self.0;
 
diff --git a/2021/src/day7.rs b/2021/src/day7.rs
index 76e18b9..6f082d9 100644
--- a/2021/src/day7.rs
+++ b/2021/src/day7.rs
@@ -87,7 +87,7 @@ fn score2(nums: &[u64], mid: u64) -> u64 {
 
 #[aoc(day7, part2)]
 fn part2(input: &[u64]) -> Result<u64> {
-    let mut input: Vec<_> = input.to_vec();
+    let input: Vec<_> = input.to_vec();
     let avg = input.iter().sum::<u64>() / input.len() as u64;
 
     let s = if avg > 10 { avg - 10 } else { 0 };