diff --git a/src/core.tsx b/src/core.tsx
index 62eb357..869dc86 100644
--- a/src/core.tsx
+++ b/src/core.tsx
@@ -162,7 +162,7 @@ export default class EChartsReactCore extends PureComponent<EChartsReactProps> {
     if (!events) return;
     // loop and off
     for (const eventName in events) {
-      if (isString(eventName) && Object.prototype.hasOwnProperty.call(events, eventName)) {
+      if (isString(eventName)) {
         instance.off(eventName);
       }
     }