diff --git a/lib/roundrobinlist.js b/lib/roundrobinlist.js
index 3cdc4c6..b982a05 100644
--- a/lib/roundrobinlist.js
+++ b/lib/roundrobinlist.js
@@ -7,7 +7,7 @@
  *   list.next() ==> [1]
  *   list.next(2) ==> [2, 3]
  *   list.next(2) ==> [1, 2]
- *   list.add(5) ==> 5
+ *   list.add(5) ==> 4
  *   list.next(2) ==> [3, 5]
  */
 class RoundRobinList {