diff --git a/README.md b/README.md
index 141870d..0c5e337 100644
--- a/README.md
+++ b/README.md
@@ -45,9 +45,9 @@ Solutions for [Advent of Code](https://adventofcode.com/) in [Rust](https://www.
 | [Day 12](./src/bin/12.rs) | `137.9µs` | `618.3µs` |
 | [Day 13](./src/bin/13.rs) | `12.3µs` | `15.9µs` |
 | [Day 14](./src/bin/14.rs) | `26.4µs` | `4.3ms` |
-| [Day 15](./src/bin/15.rs) | `30.6µs` | `152.2µs` |
+| [Day 15](./src/bin/15.rs) | `29.0µs` | `143.0µs` |
 
-**Total: 6.89ms**
+**Total: 6.88ms**
 <!--- benchmarking table --->
 
 ---
diff --git a/src/bin/15.rs b/src/bin/15.rs
index 41bc4e2..55351fb 100644
--- a/src/bin/15.rs
+++ b/src/bin/15.rs
@@ -3,12 +3,12 @@ advent_of_code::solution!(15);
 pub fn part_one(input: &str) -> Option<u32> {
     Some(
         input
+            .trim()
             .as_bytes()
             .split(|&ch| ch == b',')
             .map(|s| {
                 s.iter()
                     .copied()
-                    .filter(|&ch| ch != b'\n')
                     .fold(0, |acc, ch| ((acc + ch as u32) * 17) % 256)
             })
             .sum(),
@@ -18,6 +18,7 @@ pub fn part_one(input: &str) -> Option<u32> {
 pub fn part_two(input: &str) -> Option<u32> {
     let mut map = LensMap::new();
     for op in input
+        .trim()
         .as_bytes()
         .split(|&ch| ch == b',')
         .map(Operation::from)