diff --git a/packages/@headlessui-vue/src/components/dialog/dialog.ts b/packages/@headlessui-vue/src/components/dialog/dialog.ts
index dd1b24c7f3..02ee4e069f 100644
--- a/packages/@headlessui-vue/src/components/dialog/dialog.ts
+++ b/packages/@headlessui-vue/src/components/dialog/dialog.ts
@@ -78,10 +78,13 @@ export let Dialog = defineComponent({
   },
   emits: { close: (_close: boolean) => true },
   setup(props, { emit, attrs, slots, expose }) {
+    let ready = computed(() => typeof window !== 'undefined')
     let nestedDialogCount = ref(0)
 
     let usesOpenClosedState = useOpenClosed()
     let open = computed(() => {
+      if (ready.value === false) return false
+
       if (props.open === Missing && usesOpenClosedState !== null) {
         // Update the `open` prop based on the open closed state
         return match(usesOpenClosedState.value, {