--- a/taskcluster/taskgraph/transforms/task.py
+++ b/taskcluster/taskgraph/transforms/task.py
@@ -541,18 +541,16 @@ def build_beetmover_payload(config, task
         task_def['payload']['locale'] = worker['locale']
 
 
 @payload_builder('balrog')
 def build_balrog_payload(config, task, task_def):
     worker = task['worker']
 
     task_def['payload'] = {
-        # signing cert is unused, but required by balrogworker (Bug 1282187 c#7)
-        'signing_cert': "dep",
         'upstreamArtifacts':  worker['upstream-artifacts']
     }
 
 
 @payload_builder('macosx-engine')
 def build_macosx_engine_payload(config, task, task_def):
     worker = task['worker']
     artifacts = map(lambda artifact: {