diff --git a/astrbot/core/provider/sources/edge_tts_source.py b/astrbot/core/provider/sources/edge_tts_source.py
index e5ea05956..c64fb07c4 100644
--- a/astrbot/core/provider/sources/edge_tts_source.py
+++ b/astrbot/core/provider/sources/edge_tts_source.py
@@ -52,7 +52,7 @@ class ProviderEdgeTTS(TTSProvider):
             await communicate.save(mp3_path)
             
             # 使用ffmpeg将MP3转换为标准WAV格式
-            result = subprocess.run([
+            _ = subprocess.run([
                 "ffmpeg",
                 "-y",                   # 覆盖输出文件
                 "-i", mp3_path,         # 输入文件