diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3bf2b8b8bb..69fc9da8cd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased - React]
 
-- Nothing yet!
+- Fix incorrect type error `unique symbol` ([#248](https://github.com/tailwindlabs/headlessui/pull/248), [#240](https://github.com/tailwindlabs/headlessui/issues/240))
 
 ## [Unreleased - Vue]
 
diff --git a/packages/@headlessui-react/src/types.ts b/packages/@headlessui-react/src/types.ts
index 6775799076..6d91a8b406 100644
--- a/packages/@headlessui-react/src/types.ts
+++ b/packages/@headlessui-react/src/types.ts
@@ -1,7 +1,9 @@
 import { ReactNode, ReactElement } from 'react'
-// A unique placeholder we can use as some defaults. This is nice because we can use this instead of
+
+// A unique placeholder we can use as a default. This is nice because we can use this instead of
 // defaulting to null / never / ... and possibly collide with actual data.
-const __: unique symbol = Symbol('__placeholder__')
+// Ideally we use a unique symbol here.
+let __ = '1D45E01E-AF44-47C4-988A-19A94EBAF55C' as const
 export type __ = typeof __
 
 export type Expand<T> = T extends infer O ? { [K in keyof O]: O[K] } : never