diff --git a/src/assignments/assignment01.rs b/src/assignments/assignment01.rs
index 9713865..5d04702 100644
--- a/src/assignments/assignment01.rs
+++ b/src/assignments/assignment01.rs
@@ -13,7 +13,7 @@ pub(crate) fn add(lhs: usize, rhs: usize) -> usize {
     todo!()
 }
 
-/// Subs two unsigned words. If overflow happens, just wrap around.
+/// Subtracts two unsigned words. If overflow happens, just wrap around.
 pub(crate) fn sub(lhs: usize, rhs: usize) -> usize {
     todo!()
 }