diff --git a/packages/react-ranger/src/index.tsx b/packages/react-ranger/src/index.tsx
index eef90f8..2f8ec6a 100644
--- a/packages/react-ranger/src/index.tsx
+++ b/packages/react-ranger/src/index.tsx
@@ -4,7 +4,7 @@ import { RangerConfig, RangerOptions, Ranger } from '@tanstack/ranger'
 export * from '@tanstack/ranger'
 
 const useIsomorphicLayoutEffect =
-  typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect
+  typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect
 
 export function useRanger<TTrackElement>(
   options: RangerOptions<TTrackElement>,
@@ -12,7 +12,7 @@ export function useRanger<TTrackElement>(
   const rerender = React.useReducer(() => ({}), {})[1]
   const resolvedOptions: RangerConfig<TTrackElement> = {
     ...options,
-    rerender,
+    rerender: rerender,
     onChange: (instance) => {
       rerender()
       options.onChange?.(instance)