diff --git a/drb-c2-core/app/routers/upload.py b/drb-c2-core/app/routers/upload.py
index 34009c4..7f3905b 100644
--- a/drb-c2-core/app/routers/upload.py
+++ b/drb-c2-core/app/routers/upload.py
@@ -44,7 +44,7 @@ async def upload_call_audio(
     if not data:
         raise HTTPException(400, "Empty file.")
 
-    filename = f"{call_id}_{file.filename}"
+    filename = file.filename
     audio_url = await upload_audio(data, filename)
 
     if audio_url: