diff --git a/packages/presentation/src/components/MessageBox.svelte b/packages/presentation/src/components/MessageBox.svelte
index 950d190558..b7f76c4978 100644
--- a/packages/presentation/src/components/MessageBox.svelte
+++ b/packages/presentation/src/components/MessageBox.svelte
@@ -19,7 +19,7 @@
   import presentation, { HTMLViewer } from '..'
 
   export let label: IntlString
-  export let labelProps: IntlString
+  export let labelProps: Record<string, any> | undefined = undefined
   export let message: IntlString
   export let richMessage: boolean = false
   export let params: Record<string, any> = {}