diff --git a/app/main.py b/app/main.py
index 431454c..b9a4dab 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,4 +1,3 @@
-import os
 import uuid
 from io import BytesIO
 
@@ -8,7 +7,7 @@ from fastapi.staticfiles import StaticFiles
 
 
 def generate_uuid_from_file(file_content):
-    namespace_oid = uuid.UUID('6ba7b812-9dad-11d1-80b4-00c04fd430c8')
+    namespace_oid = uuid.UUID("6ba7b812-9dad-11d1-80b4-00c04fd430c8")
     return uuid.uuid5(namespace_oid, str(file_content))
 
 
@@ -20,7 +19,7 @@ app = FastAPI(
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
 
-@app.post('/upload_avatar', response_model=dict[str, str])
+@app.post("/upload_avatar", response_model=dict[str, str])
 async def upload_avatar(file: UploadFile):
     content = await file.read()
     name = generate_uuid_from_file(content)