diff --git a/packages/runtime-core/src/component.ts b/packages/runtime-core/src/component.ts
index 19035961..3fea92ba 100644
--- a/packages/runtime-core/src/component.ts
+++ b/packages/runtime-core/src/component.ts
@@ -549,7 +549,7 @@ function setupStatefulComponent(
     }
   }
   // 0. create render proxy property access cache
-  instance.accessCache = {}
+  instance.accessCache = Object.create(null)
   // 1. create public instance / render proxy
   // also mark it raw so it's never observed
   instance.proxy = new Proxy(instance.ctx, PublicInstanceProxyHandlers)