diff --git a/Amazon-S3-API.md b/Amazon-S3-API.md
index d5d7066..f5c3d0d 100644
--- a/Amazon-S3-API.md
+++ b/Amazon-S3-API.md
@@ -39,7 +39,8 @@ Not included:
 # Feature difference
 |  | SeaweedFS | Amazon S3 |
 | ---------------- | -- | -- |
-| Multi byte ranges| Yes | No |
+| Multi byte ranges reads| Yes | No |
+| DeleteObject deletes a folder| Yes | No |
 
 # Authentication
 By default, the access key and secret key to access `weed s3` is not authenticated. To To enable credential based access, create a config.json file similar to the example below, and specify it via `weed s3 -config=config.json`.