diff --git a/src/assistant/lib/models/tts/voice/base.py b/src/assistant/lib/models/tts/voice/base.py
index 45c3960..1682b02 100644
--- a/src/assistant/lib/models/tts/voice/base.py
+++ b/src/assistant/lib/models/tts/voice/base.py
@@ -20,6 +20,8 @@ class BaseVoiceModel(pydantic.BaseModel):
     @pydantic.model_validator(mode="before")
     @classmethod
     def check_voice_name_exists(cls, data: typing.Any) -> typing.Any:
+        if not data:
+            return data
         voice_id = data.get("voice_id")
         voice_name = data.get("voice_name")
         if not voice_name and voice_id:
diff --git a/src/assistant/lib/models/tts/voice/yandex.py b/src/assistant/lib/models/tts/voice/yandex.py
index 476a1f0..90f8c12 100644
--- a/src/assistant/lib/models/tts/voice/yandex.py
+++ b/src/assistant/lib/models/tts/voice/yandex.py
@@ -16,6 +16,8 @@ class YandexVoiceModel(models_tts_base.BaseVoiceModel):
     @pydantic.model_validator(mode="before")
     @classmethod
     def check_voice_name_exists(cls, data: typing.Any) -> typing.Any:
+        if not data:
+            return data
         voice_id = data.get("voice_id")
         voice_name = data.get("voice_name")
         role = data.get("role")