diff --git a/src/core/service/api/context/inner-audio.js b/src/core/service/api/context/inner-audio.js
index 865e95d5fbd505a5b5663764ba5f0486c54dadad..dd8546ae41fdf1b921e6ff61daa99f01ec4e0164 100644
--- a/src/core/service/api/context/inner-audio.js
+++ b/src/core/service/api/context/inner-audio.js
@@ -69,7 +69,7 @@ class InnerAudioContext {
       get () {
         var buffered = audio.buffered
         if (buffered.length) {
-          return buffered[buffered.length - 1].end()
+          return buffered.end(buffered.length - 1)
         } else {
           return 0
         }