diff --git a/assets/_Game/Scripts/Extension/Extension.ts b/assets/_Game/Scripts/Extension/Extension.ts
index 2d9cf9b..d283ebd 100644
--- a/assets/_Game/Scripts/Extension/Extension.ts
+++ b/assets/_Game/Scripts/Extension/Extension.ts
@@ -341,7 +341,9 @@ AudioSource.prototype.setPlaybackRate = function (value: number) {
     this._playbackRate = value;
     if (this._player) {
         try {
-            this._player._player._sourceNode.playbackRate.value = value;
+            if (this._player._player._sourceNode.playbackRate) {
+                this._player._player._sourceNode.playbackRate.value = value;
+            }
         } catch (e) {}
         this._playbackRate = value;
     } else {