diff --git a/openapi.yaml b/openapi.yaml
index b562ccde..2f8cab42 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -5704,14 +5704,14 @@ components:
       format: date-time
       description: >-
         Date and time of queueing the batch job (i.e., when the status 'queued' was set),
-        formatted as a [RFC 3339](https://www.rfc-editor.org/rfc/rfc3339.html) date-time.
+        formatted as an [RFC 3339](https://www.rfc-editor.org/rfc/rfc3339.html) date-time.
       example: '2017-01-01T09:34:00Z'
     started:
       type: string
       format: date-time
       description: >-
         Date and time when the batch job started processing (i.e., when the status 'running' was set),
-        formatted as a [RFC 3339](https://www.rfc-editor.org/rfc/rfc3339.html) date-time.
+        formatted as an [RFC 3339](https://www.rfc-editor.org/rfc/rfc3339.html) date-time.
       example: '2017-01-01T09:36:18Z'
     expires:
       type: string