diff --git a/packages/runtime-core/src/componentOptions.ts b/packages/runtime-core/src/componentOptions.ts
index c836f125493..70948d41cf9 100644
--- a/packages/runtime-core/src/componentOptions.ts
+++ b/packages/runtime-core/src/componentOptions.ts
@@ -610,7 +610,8 @@ export function applyOptions(
           Object.defineProperty(ctx, key, {
             value: methodHandler.bind(publicThis),
             configurable: true,
-            enumerable: false
+            enumerable: true,
+            writable: true
           })
         } else {
           ctx[key] = methodHandler.bind(publicThis)