diff --git a/app/services/voice.py b/app/services/voice.py
index 355dfcf..db64187 100644
--- a/app/services/voice.py
+++ b/app/services/voice.py
@@ -1081,7 +1081,7 @@ def should_use_azure_speech_services(voice_name: str) -> bool:
 
 
 def tts(
-    text: str, voice_name: str, voice_rate: float, voice_pitch: float, voice_file: str, tts_engine: str = "azure"
+    text: str, voice_name: str, voice_rate: float, voice_pitch: float, voice_file: str, tts_engine: str
 ) -> Union[SubMaker, None]:
     logger.info(f"使用 TTS 引擎: '{tts_engine}', 语音: '{voice_name}'")
 
diff --git a/webui/components/audio_settings.py b/webui/components/audio_settings.py
index d83a88d..c059c81 100644
--- a/webui/components/audio_settings.py
+++ b/webui/components/audio_settings.py
@@ -591,6 +591,7 @@ def render_voice_preview_new(tr, selected_engine):
                 voice_rate=voice_rate,
                 voice_pitch=voice_pitch,
                 voice_file=audio_file,
+                tts_engine=st.session_state.get('tts_engine')
             )
 
             if sub_maker and os.path.exists(audio_file):