diff --git a/src/lib/components/transitions/TransitionRoot.svelte b/src/lib/components/transitions/TransitionRoot.svelte
index 16a816f..6757021 100644
--- a/src/lib/components/transitions/TransitionRoot.svelte
+++ b/src/lib/components/transitions/TransitionRoot.svelte
@@ -114,7 +114,7 @@
   import TransitionChild from "./TransitionChild.svelte";
   import type { useId } from "$lib/hooks/use-id";
 
-  export let show: boolean;
+  export let show: boolean = null;
   export let unmount = true;
   export let appear = false;