diff --git a/assets/core/common/audio/AudioMusic.ts b/assets/core/common/audio/AudioMusic.ts
index d9392b9..b6e676d 100644
--- a/assets/core/common/audio/AudioMusic.ts
+++ b/assets/core/common/audio/AudioMusic.ts
@@ -58,7 +58,7 @@ export class AudioMusic extends AudioSource {
 
     /** 停止音乐播放 */
     stop() {
-        this._url = null;
+        this._url = null!;
         super.stop();
     }