diff --git a/api-ref/source/certificates.inc b/api-ref/source/certificates.inc
index 59276e2be2..aff0e244c1 100644
--- a/api-ref/source/certificates.inc
+++ b/api-ref/source/certificates.inc
@@ -43,6 +43,7 @@ Response
 .. rest_parameters:: parameters.yaml
 
   - X-Openstack-Request-Id: request_id
+  - cluster_uuid: cluster_id
   - pem: pem
   - bay_uuid: bay_id
   - links: links
diff --git a/api-ref/source/samples/certificates-ca-show-resp.json b/api-ref/source/samples/certificates-ca-show-resp.json
index 409846dbcb..d53909b27a 100644
--- a/api-ref/source/samples/certificates-ca-show-resp.json
+++ b/api-ref/source/samples/certificates-ca-show-resp.json
@@ -1,4 +1,5 @@
 {
+   "cluster_uuid":"0b4b766f-1500-44b3-9804-5a6e12fe6df4"
    "pem":"-----BEGIN CERTIFICATE-----\nMIICzDCCAbSgAwIBAgIQOOkVcEN7TNa9E80GoUs4xDANBgkqhkiG9w0BAQsFADAO\n-----END CERTIFICATE-----\n",
    "bay_uuid":"0b4b766f-1500-44b3-9804-5a6e12fe6df4",
    "links":[
@@ -11,4 +12,4 @@
          "rel":"bookmark"
       }
    ]
-}
\ No newline at end of file
+}