diff --git a/templates/minio.env.j2 b/templates/minio.env.j2
index 566ec9b..0638104 100644
--- a/templates/minio.env.j2
+++ b/templates/minio.env.j2
@@ -9,7 +9,7 @@ MINIO_OPTS="--address {{ minio_server_addr }} {{ minio_server_opts }}"
 
 {% if minio_access_key %}
 # Access Key of the server.
-MINIO_ROOT_USERNAME="{{ minio_root_username }}"
+MINIO_ROOT_USER="{{ minio_root_username }}"
 {% endif %}
 {% if minio_secret_key %}
 # Secret key of the server.