diff --git a/Amazon-IAM-API.md b/Amazon-IAM-API.md
index 2e26e5c..213120d 100644
--- a/Amazon-IAM-API.md
+++ b/Amazon-IAM-API.md
@@ -1,7 +1,7 @@
 To be compatible with Amazon IAM API, a separate "weed iam" command is provided.
 
 # How it works?
-`weed iam` will start a stateless gateway server to bridge the Amazon IAM API to SeaweedFS Filer. For convenience, weed server -iam will start a master, a volume server, a filer, and the IAM gateway. And weed filer -iam can start a filer and the IAM gateway together also.
+`weed iam` will start a stateless gateway server to bridge the Amazon IAM API to SeaweedFS Filer. For convenience, `weed server -iam` will start a master, a volume server, a filer, and the IAM gateway. And `weed filer -iam` can start a filer and the IAM gateway together also.
 
 # Supported APIs