diff --git a/packages/core/src/components/tree/tree.tsx b/packages/core/src/components/tree/tree.tsx
index ceee32ef76b..9875913c714 100644
--- a/packages/core/src/components/tree/tree.tsx
+++ b/packages/core/src/components/tree/tree.tsx
@@ -272,8 +272,8 @@ export class Tree {
   }
 
   disconnectedCallback() {
-    this.hyperlist.destroy();
-    this.observer.disconnect();
+    this.hyperlist?.destroy();
+    this.observer?.disconnect();
   }
 
   @Watch('model')