diff --git a/packages/vuetify/src/components/VTreeview/VTreeview.tsx b/packages/vuetify/src/components/VTreeview/VTreeview.tsx
index c046ccabbc7..fb2740d9e58 100644
--- a/packages/vuetify/src/components/VTreeview/VTreeview.tsx
+++ b/packages/vuetify/src/components/VTreeview/VTreeview.tsx
@@ -125,7 +125,7 @@ export const VTreeview = genericComponent<new <T, O, A, S, M>(
 
     function getChildren (id: unknown) {
       const arr: unknown[] = []
-      const queue = ((vListRef.value?.children.get(id) ?? []).slice())
+      const queue = ((vListRef.value?.children.get(toRaw(id)) ?? []).slice())
       while (queue.length) {
         const child = queue.shift()
         if (!child) continue