diff --git a/packages/inula/src/inulax/proxy/Observer.ts b/packages/inula/src/inulax/proxy/Observer.ts
index 0154fa67..eab5b2df 100644
--- a/packages/inula/src/inulax/proxy/Observer.ts
+++ b/packages/inula/src/inulax/proxy/Observer.ts
@@ -117,7 +117,7 @@ export class Observer implements IObserver {
         vNodes: nodesList.map((vNode: VNode) => {
           let realNode = vNode.realNode;
           let searchedNode: VNode | null | undefined = vNode;
-          while (!realNode) {
+          while (searchedNode && !realNode) {
             searchedNode = searchedNode?.child;
             realNode = searchedNode?.realNode;
           }