diff --git a/s3sign/utils.py b/s3sign/utils.py
index 7b2c011..fb3d8c1 100644
--- a/s3sign/utils.py
+++ b/s3sign/utils.py
@@ -108,8 +108,6 @@ def upload_file(
         max_file_size, acl, expiration_time, private
 ) -> dict:
     S3_BUCKET = bucket
-    mime_type = mime_type
-    object_name = object_name
 
     url = 'https://{}.s3.amazonaws.com/{}'.format(
         S3_BUCKET, object_name)