diff --git a/packages/artplayer/src/template.js b/packages/artplayer/src/template.js
index 74c556925..cdf966af5 100644
--- a/packages/artplayer/src/template.js
+++ b/packages/artplayer/src/template.js
@@ -12,7 +12,7 @@ export default class Template {
         }
 
         errorHandle(
-            art.constructor.instances.every((art) => art.template.$container !== this.$container),
+            art.constructor.instances.every((ins) => ins.template.$container !== this.$container),
             'Cannot mount multiple instances on the same dom element',
         );