diff --git a/api-ref/source/v3/authenticate-v3.inc b/api-ref/source/v3/authenticate-v3.inc
index 201652e0fd..479c6d59f4 100644
--- a/api-ref/source/v3/authenticate-v3.inc
+++ b/api-ref/source/v3/authenticate-v3.inc
@@ -506,7 +506,6 @@ Request
 .. rest_parameters:: parameters.yaml
 
    - X-Auth-Token: X-Auth-Token
-   - X-Subject-Token: X-Subject-Token
 
 Response Parameters
 -------------------