diff --git a/docs/kms/README.md b/docs/kms/README.md
index 3fffa6180..ecb25b5e1 100644
--- a/docs/kms/README.md
+++ b/docs/kms/README.md
@@ -88,6 +88,7 @@ export MINIO_SSE_VAULT_APPROLE_ID=9b56cc08-8258-45d5-24a3-679876769126
 export MINIO_SSE_VAULT_APPROLE_SECRET=4e30c52f-13e4-a6f5-0763-d50e8cb4321f
 export MINIO_SSE_VAULT_ENDPOINT=https://vault-endpoint-ip:8200
 export MINIO_SSE_VAULT_KEY_NAME=my-minio-key
+export MINIO_SSE_VAULT_AUTH_TYPE=approle
 minio server ~/export
 ```