diff --git a/exercises/concept/cater-waiter/.docs/introduction.md b/exercises/concept/cater-waiter/.docs/introduction.md
index 044432b5c2..926aea3d90 100644
--- a/exercises/concept/cater-waiter/.docs/introduction.md
+++ b/exercises/concept/cater-waiter/.docs/introduction.md
@@ -1,7 +1,7 @@
 # Sets
 
 
-A [set][type-set] is a _mutable_ and _unordered_ collection of [_hasable_][hashable] objects.
+A [set][type-set] is a _mutable_ and _unordered_ collection of [_hashable_][hashable] objects.
 Set members must be distinct — duplicate items are not allowed.
 They can hold multiple different data types and even nested structures like a `tuple` of `tuples` — as long as all elements can be _hashed_.
 Sets also come in an immutable [`frozensets`][type-frozenset] flavor.