diff --git a/README.md b/README.md
index 234a9a5..a36fa33 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ Environment variables should be prefixed with `LLDAP_` to override the
 configuration.
 
 Secrets can also be set through a file. The filename should be specified by the
-variables `LLDAP_JWT_SECRET_FILE` or `LLDAP_USER_PASS_FILE`, and the file
+variables `LLDAP_JWT_SECRET_FILE` or `LLDAP_LDAP_USER_PASS_FILE`, and the file
 contents are loaded into the respective configuration parameters. Note that
 `_FILE` variables take precedence.