diff --git a/ladderz/src/pre_algebra/unit1.rs b/ladderz/src/pre_algebra/unit1.rs
index ef8fc9f..2b23202 100644
--- a/ladderz/src/pre_algebra/unit1.rs
+++ b/ladderz/src/pre_algebra/unit1.rs
@@ -183,7 +183,7 @@ pub fn is_multiple(x: u32, y: u32) -> bool {
     x % y == 0
 }
 
-/// Returns a HashSet containing all the multiples of a positive integer `n` in the range [n, end].
+/// Finds all the multiples of a positive integer `n` up to and including `end` (in the range [n, end]).
 ///
 /// # Challenge
 ///