diff --git a/packages/@headlessui-vue/src/hooks/use-window-event.ts b/packages/@headlessui-vue/src/hooks/use-window-event.ts
index 9ce5c2d..8929c0d 100644
--- a/packages/@headlessui-vue/src/hooks/use-window-event.ts
+++ b/packages/@headlessui-vue/src/hooks/use-window-event.ts
@@ -5,6 +5,8 @@ export function useWindowEvent<TType extends keyof WindowEventMap>(
   listener: (this: Window, ev: WindowEventMap[TType]) => any,
   options?: boolean | AddEventListenerOptions
 ) {
+  if (typeof window === 'undefined') return
+
   watchEffect(onInvalidate => {
     window.addEventListener(type, listener, options)