diff --git a/jigsawstack/audio.py b/jigsawstack/audio.py
index 22b1f7a..ca5dfaf 100644
--- a/jigsawstack/audio.py
+++ b/jigsawstack/audio.py
@@ -84,7 +84,7 @@ class SpeechToTextResponse(BaseResponse):
 
     confidence: Optional[float]
     """
-    the confidence of the transcription language detection, available if language is set to auto
+    the confidence of the transcription language detection, available if language is set to auto.
     """