diff --git a/2022/day9/rust/src/main.rs b/2022/day9/rust/src/main.rs
index e7f6551..5d4273d 100644
--- a/2022/day9/rust/src/main.rs
+++ b/2022/day9/rust/src/main.rs
@@ -7,8 +7,8 @@ use std::{
 
 use aoc::vec2::{Direction, Vec2};
 
-fn tail_movement(following: Vec2, tail: Vec2) -> Vec2 {
-    let (dx, dy) = (following - tail).into();
+fn knot_movement(previous: Vec2, knot: Vec2) -> Vec2 {
+    let (dx, dy) = (previous - knot).into();
 
     let movement = if dx.abs() <= 1 && dy.abs() <= 1 {
         (0, 0)
@@ -33,8 +33,8 @@ fn simulate_knots(num_knots: usize, instructions: &[(Direction, usize)]) -> usiz
 
             let tail = knots
                 .iter_mut()
-                .reduce(|following, knot| {
-                    *knot += tail_movement(*following, *knot);
+                .reduce(|previous, knot| {
+                    *knot += knot_movement(*previous, *knot);
                     knot
                 })
                 .unwrap();