--- a/taskcluster/docs/taskgraph.rst
+++ b/taskcluster/docs/taskgraph.rst
@@ -185,17 +185,17 @@ Task Parameterization
 
 A few components of tasks are only known at the very end of the decision task
 -- just before the ``queue.createTask`` call is made.  These are specified
 using simple parameterized values, as follows:
 
 ``{"relative-datestamp": "certain number of seconds/hours/days/years"}``
     Objects of this form will be replaced with an offset from the current time
     just before the ``queue.createTask`` call is made.  For example, an
-    artifact expiration might be specified as ``{"relative-timestamp": "1
+    artifact expiration might be specified as ``{"relative-datestamp": "1
     year"}``.
 
 ``{"task-reference": "string containing <dep-name>"}``
     The task definition may contain "task references" of this form.  These will
     be replaced during the optimization step, with the appropriate taskId for
     the named dependency substituted for ``<dep-name>`` in the string.
     Multiple labels may be substituted in a single string, and ``<<>`` can be
     used to escape a literal ``<``.

--- a/taskcluster/taskgraph/morph.py
+++ b/taskcluster/taskgraph/morph.py
@@ -52,17 +52,17 @@ def derive_misc_task(task, purpose, imag
     # this is why all docker image tasks are included in the target task graph: we
     # need to find them in label_to_taskid, if if nothing else required them
     image_taskid = label_to_taskid['build-docker-image-' + image]
 
     task_def = {
         'provisionerId': 'aws-provisioner-v1',
         'workerType': 'gecko-misc',
         'dependencies': [task.task_id, image_taskid],
-        'created': {'relative-timestamp': '0 seconds'},
+        'created': {'relative-datestamp': '0 seconds'},
         'deadline': task.task['deadline'],
         # no point existing past the parent task's deadline
         'expires': task.task['deadline'],
         'metadata': {
             'name': label,
             'description': '{} for {}'.format(purpose, task.task['metadata']['description']),
             'owner': task.task['metadata']['owner'],
             'source': task.task['metadata']['source'],