diff --git a/buildman/manager/ephemeral.py b/buildman/manager/ephemeral.py
index f026b61d9..3892e4bba 100644
--- a/buildman/manager/ephemeral.py
+++ b/buildman/manager/ephemeral.py
@@ -475,7 +475,7 @@ class EphemeralBuilderManager(BaseManager):
 
       try:
         metric_queue.put_deprecated('EphemeralBuilderStarted', 1, unit='Count')
-        metric_queue.ephemeral_build_workers.Inc(labelvalues=[execution_id, build_uuid])
+        metric_queue.ephemeral_build_workers.Inc()
       except:
         logger.exception('Exception when writing start metrics for execution %s for job %s',
                          execution_id, build_uuid)
diff --git a/buildman/manager/executor.py b/buildman/manager/executor.py
index fd5c99a7e..f09ce8d69 100644
--- a/buildman/manager/executor.py
+++ b/buildman/manager/executor.py
@@ -197,7 +197,7 @@ class EC2Executor(BuilderExecutor):
     except boto.exception.EC2ResponseError as ec2e:
       logger.exception('Unable to spawn builder instance')
       metric_queue.put_deprecated('EC2BuildStartFailure', 1, unit='Count')
-      metric_queue.ephemeral_build_worker_failure.Inc(labelvalues=[build_uuid])
+      metric_queue.ephemeral_build_worker_failure.Inc()
       raise ec2e
 
     if not reservation.instances:
diff --git a/util/metrics/metricqueue.py b/util/metrics/metricqueue.py
index a27dd28ed..caf065ea5 100644
--- a/util/metrics/metricqueue.py
+++ b/util/metrics/metricqueue.py
@@ -50,9 +50,9 @@ class MetricQueue(object):
     self.percent_building = prom.create_gauge('build_percent_building', 'Percent building.')
     self.build_counter = prom.create_counter('builds', 'Number of builds', labelnames=['name'])
     self.ephemeral_build_workers = prom.create_counter('ephemeral_build_workers',
-      'Number of started ephemeral build workers', labelnames=['name', 'build_uuid'])
+      'Number of started ephemeral build workers')
     self.ephemeral_build_worker_failure = prom.create_counter('ephemeral_build_worker_failure',
-      'Number of failed-to-start ephemeral build workers', labelnames=['build_uuid'])
+      'Number of failed-to-start ephemeral build workers')
 
     self.work_queue_running = prom.create_gauge('work_queue_running', 'Running items in a queue',
                                                 labelnames=['queue_name'])