diff --git a/TTS/tts/configs/tortoise_config.py b/TTS/tts/configs/tortoise_config.py
index 7da94a4c..d60e43d7 100644
--- a/TTS/tts/configs/tortoise_config.py
+++ b/TTS/tts/configs/tortoise_config.py
@@ -70,7 +70,7 @@ class TortoiseConfig(BaseTTSConfig):
     model: str = "tortoise"
     # model specific params
     model_args: TortoiseArgs = field(default_factory=TortoiseArgs)
-    audio: TortoiseAudioConfig = TortoiseAudioConfig()
+    audio: TortoiseAudioConfig = field(default_factory=TortoiseAudioConfig)
     model_dir: str = None
 
     # settings