diff --git a/components/lib/utils/ObjectUtils.js b/components/lib/utils/ObjectUtils.js
index bf761b26e..afdd015ba 100755
--- a/components/lib/utils/ObjectUtils.js
+++ b/components/lib/utils/ObjectUtils.js
@@ -195,7 +195,7 @@ export default {
             let kebapProp = prop.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
             let propName = Object.prototype.hasOwnProperty.call(props, kebapProp) ? kebapProp : prop;
 
-            return vnode.props[prop] && vnode.props[prop].type === Boolean && props[propName] === '' ? true : props[propName];
+            return vnode.type.extends.props[prop].type === Boolean && props[propName] === '' ? true : props[propName];
         }
 
         return null;