--- a/taskcluster/taskgraph/transforms/build.py
+++ b/taskcluster/taskgraph/transforms/build.py
@@ -16,16 +16,16 @@ transforms = TransformSequence()
 @transforms.add
 def set_defaults(config, jobs):
     """Set defaults, including those that differ per worker implementation"""
     for job in jobs:
         job['treeherder'].setdefault('kind', 'build')
         job['treeherder'].setdefault('tier', 1)
         if job['worker']['implementation'] in ('docker-worker', 'docker-engine'):
             job['worker'].setdefault('docker-image', {'in-tree': 'desktop-build'})
-            job['worker']['chainOfTrust'] = True
+            job['worker']['chain-of-trust'] = True
             job.setdefault('extra', {})
             job['extra'].setdefault('chainOfTrust', {})
             job['extra']['chainOfTrust'].setdefault('inputs', {})
             job['extra']['chainOfTrust']['inputs']['docker-image'] = {
                 "task-reference": "<docker-image>"
             }
         yield job

--- a/taskcluster/taskgraph/transforms/task.py
+++ b/taskcluster/taskgraph/transforms/task.py
@@ -152,17 +152,17 @@ task_description_schema = Schema({
             # a raw Docker image path (repo/image:tag)
             basestring,
             # an in-tree generated docker image (from `testing/docker/<name>`)
             {'in-tree': basestring}
         ),
 
         # worker features that should be enabled
         Required('relengapi-proxy', default=False): bool,
-        Required('chainOfTrust', default=False): bool,
+        Required('chain-of-trust', default=False): bool,
         Required('taskcluster-proxy', default=False): bool,
         Required('allow-ptrace', default=False): bool,
         Required('loopback-video', default=False): bool,
         Required('loopback-audio', default=False): bool,
 
         # caches to set up for the task
         Optional('caches'): [{
             # only one type is supported by any of the workers right now
@@ -337,17 +337,17 @@ def build_docker_worker_payload(config, 
 
     if worker.get('taskcluster-proxy'):
         features['taskclusterProxy'] = True
 
     if worker.get('allow-ptrace'):
         features['allowPtrace'] = True
         task_def['scopes'].append('docker-worker:feature:allowPtrace')
 
-    if worker.get('chainOfTrust'):
+    if worker.get('chain-of-trust'):
         features['chainOfTrust'] = True
 
     capabilities = {}
 
     for lo in 'audio', 'video':
         if worker.get('loopback-' + lo):
             capitalized = 'loopback' + lo.capitalize()
             devices = capabilities.setdefault('devices', {})