diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4cab7e..e9b8bc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 
 ### Fixed
 
+- **`ImportError: cannot import name '_AUDIO_EXTS' from 'core.audio'`** —
+  `routes/stt.py` had a dead alias `from core.audio import _to_wav_16k, _AUDIO_EXTS as _VOICE_AUDIO_EXTS`;
+  `_AUDIO_EXTS` lives in `core.voice`, not `core.audio`. Removed the
+  wrong import; `_AUDIO_EXTS` is already correctly imported from `core.voice`
+  on the next line and the unused alias was never referenced in the file.
+
 - **`No module named 'core'` on container restart** — `docker restart` reuses
   the old container configuration and never applies new volume mounts from
   `docker-compose.yml`. Added a comment to `portainer-stack.yml` and updated
diff --git a/routes/stt.py b/routes/stt.py
index d20c8a4..9b7a227 100644
--- a/routes/stt.py
+++ b/routes/stt.py
@@ -17,7 +17,7 @@ from core.constants import (
 )
 from core.registry import _registry_get, TEMP_DIR
 from core.validation import _validate_http_url, _copy_limited
-from core.audio import _to_wav_16k, _AUDIO_EXTS as _VOICE_AUDIO_EXTS
+from core.audio import _to_wav_16k
 from core.voice import _AUDIO_EXTS, _UPLOAD_EXTS
 
 router = APIRouter()