diff --git a/README.md b/README.md
index c68d6cb..6abe930 100644
--- a/README.md
+++ b/README.md
@@ -221,7 +221,7 @@ There are some config settings you need to change in the files below.
 | `CMD_LDAP_USERNAMEFIELD` | Fallback to userid | The LDAP field which is used as the username on CodiMD |
 | `CMD_LDAP_TLS_CA` | `server-cert.pem, root.pem` | Root CA for LDAP TLS in PEM format (use comma to separate) |
 | `CMD_LDAP_PROVIDERNAME` | `My institution` | Optional name to be displayed at login form indicating the LDAP provider |
-| `CMD_SAML_IDPSSOURL` | `https://idp.example.com/sso` | authentication endpoint of IdP. for details, see [guide](docs/guides/auth.md#saml-onelogin). |
+| `CMD_SAML_IDPSSOURL` | `https://idp.example.com/sso` | authentication endpoint of IdP. for details, see [guide](docs/guides/auth/saml-onelogin.md). |
 | `CMD_SAML_IDPCERT` | `/path/to/cert.pem` | certificate file path of IdP in PEM format |
 | `CMD_SAML_ISSUER` | no example | identity of the service provider (optional, default: serverurl)" |
 | `CMD_SAML_IDENTIFIERFORMAT` | no example | name identifier format (optional, default: `urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress`) |