diff --git a/docs/configuration.md b/docs/configuration.md
index 79dc19df..22517852 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -160,8 +160,8 @@ default_policy: REP 3
 |------------------------|------------|----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `address`              | `string`   |                | Account address to get from wallet. If omitted default one will be used.                                                                                                                                          |
 | `listen_address`       | `string`   | `0.0.0.0:8080` | The address that the gateway is listening on.                                                                                                                                                                     |
-| `rpc_endpoint`         | `string`   |                | The address of the RPC host to which the gateway connects to resolve bucket names.                                                                                                                                |
-| `resolve_order`        | `[]string` | `[dns]`        | Order of bucket name resolvers to use.                                                                                                                                                                            |
+| `rpc_endpoint`         | `string`   |                | The address of the RPC host to which the gateway connects to resolve bucket names (required to use the `nns` resolver).                                                                                           |
+| `resolve_order`        | `[]string` | `[dns]`        | Order of bucket name resolvers to use. Available resolvers: `dns`, `nns`.                                                                                                                                         |
 | `metrics`              | `bool`     | `false`        | Flag to enable and expose the prometheus metrics.                                                                                                                                                                 |
 | `pprof`                | `bool`     | `false`        | Flag to enable the profiler.                                                                                                                                                                                      |
 | `connect_timeout`      | `duration` | `10s`          | Timeout to connect to a node.                                                                                                                                                                                     |