diff --git a/packages/svelte/src/lib/components/NodeWrapper/NodeWrapper.svelte b/packages/svelte/src/lib/components/NodeWrapper/NodeWrapper.svelte
index ea8c6494..9a1a5271 100644
--- a/packages/svelte/src/lib/components/NodeWrapper/NodeWrapper.svelte
+++ b/packages/svelte/src/lib/components/NodeWrapper/NodeWrapper.svelte
@@ -189,7 +189,7 @@
     ) {
       // prevent default scrolling behavior on arrow key press when node is moved
       event.preventDefault();
-      store.ariaLiveMessage = labelConfig['a11yDescription.ariaLiveMessage'](
+      store.ariaLiveMessage = labelConfig['a11yDescription.ariaLiveMessage']?.(
         event.key.replace('Arrow', '').toLowerCase(),
         ~~node.internals.positionAbsolute.x,
         ~~node.internals.positionAbsolute.y